Fix Windows defender 0x800700AA Error

In today's IT world, if you want a computer for typical day-to-day actions and gaming, there are 3 primary ways you can go. An Apple computer with its proprietary hardware and operating system or a typical machine with Windows or Linux operating system.

Each system has both advantages and disadvantages and picking the right one might be difficult for some users. From hardware differences to specific software and operating system, each system is aimed at a different type of work, and in this article, we will explore each one and help you in choosing the right one for you.

Apple ecosystem

Apple has managed to create a unique ecosystem of its own devices, from its iMac desktop computers to more professional MAC studio and power MAC and all the way to tablet iPad and iPhone are powered by Apple's own operating system that connects all of these devices into one large system. So if you really need one singular ecosystem this is a huge advantage.

The ecosystem on the side, MAC computer systems are great, some would argue best for coding, design, video work, and sound editing. MAC M2 chip is optimized for all of these tasks and a specially tailored operating system is just the icing on the cake. Specific Apple-made software like a logic pro or final cut also helps a lot to position MAC systems on top of the line.

Reading all of this you might think hey this is the computer for me, it does everything! Sadly the truth is not like that. The first thing that is difficult on MAC systems and a maybe big reason that it is not so adopted outside professional working environment is lack of games. If you are a gamer or plan on using MAC for gaming, well I have some bad news. The second big turn-off is that MAC systems tend to be more expensive than PC systems, yes components are of higher quality but rest assured that you will pay for also for branding.

Get MAC as your workstation for serious work and for good tech support, if you need a plain home computer keep reading.

Windows PC machine

There is no better feeling than assembling your own computer, tweaking hardware to make a monster and despite haters hating, Windows is the best all-around operating system on the market. It is supporting the largest variety of hardware and the largest variety of software.

The best platform for serious gaming and streaming Windows machine has cemented itself as a multimedia powerhouse. But, this kind of computer is not alien to being also a professional machine, you can practically do everything that you can do on Apple or Linux machine inside Windows, yes some things might require extra steps or will be slightly slower but in the end, being able to do anything is the greatest strength of Windows machine.

Of course, every system has its flaws and Windows is not immune to that. One of the biggest is being the operating system for every hardware ever made and every software as well while keeping legacy support for old software and hardware, basically, its biggest strength is in the same time its biggest weakness leading to sometimes stability issues. Also being able to place any kind of hardware can also lead to the same stability issues. Executing something a little slower than other systems and having some extra steps can also be looked upon as weaknesses.

Linux system

First and perhaps for some people, the biggest advantage of the Linux operating system is its price, it is completely free! Other advantages include the great server and networking included in the OS itself, the large amount of customization, and unmatched stability. The ability to write scripts inside the OS terminal is also a great thing and coding is much more streamlined and friendlier than on other machines.

The power of Linux is the ability to change anything, even on the system layer, no other operating system will let you change the basic functionality of the OS itself while Linux will let you do this. It is also the only operating system you can fully use by booting it up from a USB stick and having the same experience as it was installed on a local hard drive. Among other OS mentioned earlier, Linux is by far the lightest one, taking the smallest amount of memory among the three.

The bad side of the Linux machine is the steep learning curve, among the three mentioned operating systems rest assured Linux is the most difficult to learn and be comfortable in it. The operating system will require you to know the hardware and how computers work in order to fully use its potential. Other things that place it behind are not so wide hardware support compared to Windows and the somewhat confusing distro model.

Linux versions come in form of different distro packages and first-time users will face many of them being left in awe of which one to choose. Also installing drivers and software via a package system can also be a tedious task as well, often being that some version of the driver will not work on the newer version of the Linux distro.

Get a Linux machine if you are well versed in computer technology, if you want great customization of the OS itself or if you do not want to spend money on OS and software since almost entire Linux software is open source.

Anxiety from all these digital threats lurking everywhere? An antivirus program can help put your mind at ease.

What can a virus do to your device?

A virus is malicious software that can affect pretty much any device and does so in a variety of ways. Be it your computer, your phone or your smart lightbulb - as long as there’s access to the internet, malware can get to it.

How exactly does this kind of attack manifest itself? Well, there’s a wide variety of effects ranging from mild to severe. Among other things, they depend on which type of malware attacks your device - a virus, spyware, ransomware, adware or something else.

These are some of the things you can expect to happen:

• Slow performance
• System crashes
• Theft of data and sensitive information
• Connectivity issues
• Constant browser redirects
• Strange messages sent to your contacts 
• Interference with files

It really can be the stuff of nightmares. So, if you want to sleep peacefully knowing that your devices are completely safe, you should definitely consider getting an antivirus.

P.S. don’t let its name fool you - an antivirus does indeed protect your devices against more than just viruses.

What is antivirus software exactly?

Antivirus software is designed to help you battle and ward off malware. Basically, it scans your device to detect any suspicious activity and offers tools to get rid of the culprit. 

At first, antiviruses were developed to fight against viruses only, but nowadays they cover a lot more ground. Here are some of the biggest benefits of getting yourself a powerful defender.

Advantages of antivirus software

1. It fights those pesky ads

Look, constant ads that pop up everywhere aren’t the absolute worst thing that can happen on your computer. If anything, they are annoying, like when you’re trying to sleep but that one fly in your room just won’t stop buzzing.

Now, there’s a free, well-established solution for that - installing an ad blocker. And we’re about a hundred and ten percent sure you’ve already done that on each and every browser you use.

However, “if I can’t see it, it doesn’t exist” isn’t the most ideal approach for your online safety. Ad blockers can’t block everything and they won’t protect you from potential adware. An antivirus on the other hand offers that layer of protection against malware snuck into pop-ups and spammy websites.

2. It protects you from hackers

Hackers don’t target government institutions only. They’ll target regular people too if they have something to gain.

There are different types of hacking, such as phishing e-mails, transmission of malicious programs, credential reuse, denial of service and more. In any case, they take control of your device and hijack your data.

The good thing is that, as threats evolve, antiviruses evolve too and there are tons of quality programs on the market that can keep you secure for an affordable price.

3. It keeps your files and data safe

When malware enters your device, it can target pretty much any file and get access to any and all data.

Installing an antivirus program will make sure that every single file, new or old, is monitored at all times, warning you against threats immediately. That way, you can make sure to react before your other files become infected and data is lost or stolen.

Another great thing for data protection is that the best antivirus software normally comes with a password manager, so no one can use malware to steal your passwords.

4. It blocks all kinds of malware

As we already stated, malicious attacks can be performed in many ways and malware comes in in different shapes an sizes, such as:

• Trojan horse
• Spyware
• Ransomware
• Adware
• Rootkit
• RAT (remote access Trojan)
• Keyloggers
• Worms
• Botnets

Nowadays, antivirus software is designed to fight against all of these types. That’s why more often than not we hear the term 'antivirus' used interchangeably with 'anti-malware,' like in this article.

5. It keeps your children protected

You can’t keep your eyes on your kid every second of the day and you can’t protect them from everything. But at least you can limit their exposure to the threats they can encounter at every corner of the digital world.

An antivirus program will block harmful or suspicious websites and ads, which is great both for you and your children. To take it a step further, though, many such programs come with special parental controls and offer monitoring as well. It’s a great solution for keeping your kids safe online without sounding like the irritating, overbearing, controlling parent who “just doesn’t get it!”

How to pick one

There are definitely lots of different antivirus programs out there, both free and paid. We recommend you look for a paid option, since free ones are unfortunately a lot more susceptible to being compromised through malicious attacks.

Now, there are a few factors to consider when choosing the right software. If you use your PC for basic things then a basic antivirus will suffice. However, the more complex your use and the more sensitive the data you deal with, the stronger it needs to be.

It’s also crucial that you take into account the features it includes. As we already mentioned, some programs have additional security options. For example, depending on the package you select, Bitdefender provides:

• Webcam and mic monitoring
• Parental control
• Firewall
• VPN
• Password management
• Identity theft protection

Some are included in plans and some are separate products, so make sure to check out all the offers.

And don’t worry if you have multiple PCs or you’re looking for protection for your smartphone or tablet as well; Bitdefender has suitable solutions for your needs. Of course, you can also just pick their classic antivirus software if you’re not in need of advanced protection.

Another important point is how regularly the software is updated and enhanced. The more frequent the updates the better, as bugs can make the program more vulnerable. Other things we advise you consider are user-friendliness, impact on performance, reputation (user reviews especially) and, of course, price.

The bottom line

Fact is: anyone can be a malware victim. Don’t let it be you.

You can’t put a price on peace and security, so don’t be reluctant to pay for yours - especially since a lot of options out there are extremely affordable. Is $159.00 a year really too much to pay for cross-platform protection for up to 10 devices? We don’t think so.

Explore your options and protect your files and data before it’s too late.

Chedot is a Chromium-based Browser that replaces your default System Internet Browser. This browser offers users tools for downloading videos, faster browsing, and custom searches. From the publisher: A feature of our browser is a high speed on slow computers, high speed download on a poor internet, support resuming file download when connection is broken and the download in multiple threads, the ability to go on blocked websites and downloading videos from video sites.

While this may seem interesting and good at start, this browser has been marked as a Potentially Unwanted Program. It monitors user activity, collects web traffic data, and user information. While using Chedot you may see additional ads throughout your browsing sessions.

About Potentially Unwanted Applications

Exactly what is a Potentially Unwanted Program (PUP)?

People have encountered it – you download a free software, you then discover some unwanted applications on your computer system or discover a strange toolbar has been included with your browser. You didn’t have them installed, so how did they appear? These unwanted applications, which are called Potentially Unwanted Programs, or PUP in short, usually tag along as a software bundle when downloading the application and could cause serious problems for computer users. PUP does not involve malware in the traditional sense. What normally makes a PUP different from malicious software is the fact that when you download one, you’re doing it with your consent – although in most cases unintentionally and reluctantly. But, there is no doubt that PUPs remain bad news for computer users as it can be incredibly damaging to the PC in many ways.

How do unwanted programs affect you?

Unwanted programs come in many forms. More commonly, they will be found in adware bundlers which are known to utilize aggressive and misleading advertising. The majority of bundlers install many adware applications from a number of vendors, each of which features its own EULA policy. Safebytes Anti-malware completely removes this threat and safeguards your PC against PUP or malware infection. PUPS also appear in the form of undesirable toolbars or internet browser plug-ins. Not just they needlessly use up space on your screen, toolbars can also manipulate search results, track your web browsing activities, decrease your internet browser’s performance, and slow down your web connection to a crawl. They could seem harmless but PUPs are generally spyware. They may include dialers, keyloggers, and also other software built inside them that could monitor you or send out your sensitive information to 3rd parties. Because of this unwanted program, your application may freeze, your security protections can get disabled that could leave your computer susceptible, your system could get ruined, and this list goes on and on.

Tips for preventing PUPs

• Study cautiously prior to agreeing to the license agreement as it could have a clause about PUPs. • Always opt for the custom if you are given an option between Recommended and Custom Installations – never click Next, Next, Next thoughtlessly. • Install an advert blocker/pop-up blocker; Deploy anti-malware products such as Safebytes Anti-malware. These software programs will establish a wall between the computer and online criminals. • Be alert when you download and install freeware, open-source software, or shareware. Avoid downloading and installing browser extensions and applications you are not knowledgeable about. • Always download software from reliable sources like official sites as opposed to untrustworthy sharing space. Avoid torrents and peer-to-peer clients.

What To Do If You Cannot Download Safebytes Anti-Malware?

All malware is bad, but certain types of malware do much more damage to your PC than others. Some malware sits in between your computer and the net connection and blocks some or all internet sites that you really want to check out. It will also block you from installing anything on your PC, especially anti-malware applications. So what to do when malicious software keeps you from downloading or installing Safebytes Anti-Malware? Although this type of issue will be tougher to get around, there are some actions you can take.

Install the antivirus in Safe Mode

In Safe Mode, you can adjust Windows settings, un-install or install some software, and get rid of hard-to-delete viruses. In the event the virus is set to load immediately when PC starts, shifting into this mode may well prevent it from doing so. In order to get into Safe Mode or Safe Mode with Networking, press the F8 key while the PC is booting up or run MSConfig and look for the “Safe Boot” options under the “Boot” tab. Once you’re in Safe Mode, you can try to install your antivirus program without the hindrance of the virus. Now, you can run the anti-malware scan to eliminate computer viruses and malware without any hindrance from another malicious application.

Download the antivirus software using a different browser

Some viruses might target vulnerabilities of a specific browser that block the downloading process. If you suspect that your Internet Explorer happens to be hijacked by a virus or otherwise compromised by cybercriminals, the best approach is to switch over to an alternate web browser like Chrome, Firefox, or Safari to download your chosen security software – Safebytes Anti-Malware.

Make a bootable USB anti-virus drive

Here’s another solution which is creating a portable USB anti-virus software that can scan your system for malware without the need for installation. Follow these steps to run the anti-virus on the affected PC. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a clean computer. 2) Plug the USB drive into the uninfected PC. 3) Double-click on the downloaded file to open the installation wizard. 4) Choose the drive letter of the flash drive as the place when the wizard asks you exactly where you would like to install the anti-virus. Follow the on-screen instructions to complete the installation process. 5) Now, transfer the pen drive to the infected PC. 6) Double-click the EXE file to run the Safebytes tool from the flash drive. 7) Press the “Scan Now” button to start the virus scan.

SafeBytes Anti-Malware - More Protection For You

These days, an anti-malware tool can protect the computer from different forms of online threats. But wait, how to choose the right one amongst various malware protection software that is available on the market? Perhaps you might be aware, there are lots of anti-malware companies and products for you to consider. Some of them are good, some are decent, while some will affect your computer themselves! You must be careful not to pick the wrong product, especially if you purchase premium software. When it comes to commercial anti-malware software options, many people opt for popular brands, like SafeBytes, and they are very happy with it. Safebytes is among the well-established computer solutions firms, which provide this all-inclusive anti-malware software. Using its cutting edge technology, this application can help you eradicate multiples types of malware which includes computer viruses, worms, PUPs, trojans, adware, ransomware and browser hijackers. SafeBytes has outstanding features when compared with various other anti-malware programs. Below are a few of the great ones: Real-time Protection: Malware programs aiming to enter the computer are discovered and stopped as and when detected by the SafeBytes active protection shields. It’ll examine your computer system for suspicious activity regularly and shields your personal computer from unauthorized access. Optimum AntiMalware Protection: Safebytes is built on the best virus engine within the industry. These engines can find and remove threats even during the initial stages of a malware outbreak. “Fast Scan” Features: SafeBytes’s high speed malware scanning engine lessens scan times and extends battery life. Simultaneously, it’ll effectively identify and remove infected files or any online threat. Web Filtering: SafeBytes provides instant safety rating to the webpages you are about to check out, automatically blocking harmful sites and to ensure that you’re certain of your online safety while browsing the internet. Lightweight: SafeBytes is really a lightweight tool. It use up an extremely small amount of processing power as it operates in the background therefore you will not observe any system performance difficulties. Premium Support: For any technical concerns or product support, you can obtain 24/7 professional assistance via chat and e-mail.

Technical Details and Manual Removal (Advanced Users)

If you don’t wish to use malware removal software and prefer to get rid of Chedot manually, you could possibly do so by going to the Windows Add/Remove Programs menu in the Control Panel and deleting the offending program; in cases of browser extensions, you may uninstall it by visiting the browsers Add-on/Extension manager. It’s also highly recommended to factory reset your browser to its default state to fix corrupt settings. To make sure of complete removal, find the following registry entries on your computer and delete it or reset the values accordingly. Please keep in mind that only advanced users should try to manually edit the system files mainly because deleting any single critical registry entry results in a major problem or even a system crash. Furthermore, certain malware keeps replicating which makes it tough to get rid of. You’re encouraged to do this procedure in Safe Mode.

If we are to believe news from Intel, new series of processors based on Alder Lake architecture are about to be released somewhere in October. Alder Lake is the 12^th Generation Core of Intel processors and it is meant to have all advantages of the current CPU structure. I9 is aimed to pack a punch against its competitors with technology including eight high-performance Golden Cove cores (P-cores) with Hyper-Threading and eight energy-efficient Goldmont (E-cores) equipped with a 30MB L3 cache and operating at high clock speeds. During the benchmark test, the new CPU outperformed all of Intel’s previous Rocket Lake structure processors which is logically expected but the big surprise came from results that indicate better performance than Apple’s new M1 processor even in single-threaded performance which is supposed to be best in that field. Another surprise was really beating AMD Ryzen 9 in each field. If we take into account that i9 has 16 cores in total and can process 24 threads against Ryzen 9 with 16 Cores and 32 threads this is an impressive feature. Now truth to be told Alder lake has massive L3 cache and microarchitectural advantages and consumes much more power but the results of performance are high. Also, note that this early CPU is not really a mass production one and maybe some things will still change but early results are very satisfactory. We will see what will price tag be since in this age of shortage and competition that will also play a big role in its overall success. Speaking of competition I eagerly await AMD’s response to this, in any way it seems that the CPU market is for some turbulence which is always a good thing for the final customer and I welcome it.

Error Code 22 - What is it?

Code 22 is a type of Device Manager Error code. Device manager errors are reported by the drivers causing the problem. It indicates that the devices are disabled in the Device Manager. This error code is displayed in the following format:

This device is disabled. (Code 22)

It looks like a very simple matter to enable a device from the Device Manager interface but if the device fails to load then there are likely greater underlying problems with the drivers. Drivers allow hardware devices to communicate with other hardware devices and the operating system. Drivers contain instructions and operating procedures for devices. Without a driver, a hardware device will not function and may not even appear in the Device Manager.

Solution

Error Causes

Common causes of error code 22 are:

• Device is disabled
• Driver is outdated
• The driver is missing or corrupt
• The previous attempt to update the driver failed
• Device is damaged
• The device is not configured as the default device

This means that though the error code 22 typically indicates that the device reporting the error is disabled but other causes can also be associated with the error occurrence.

Further Information and Manual Repair

Here are some of the best and easy do-it-yourself methods to resolve error 22 on your PC. Try these methods to repair the issue.

Method 1

If the error code 22 is triggered due to a disabled device, then all you need to do to resolve the issue is enable the device. To enable the disabled device, follow these steps. Simply go to the start menu and type Device Manager in the search bar. Now click on the Device Manager and then click Actions. After you Click Actions, double click Enable Device. The Enable Device Wizard will pop up. Follow all the prompts from the Enable Device Wizard. This will hopefully resolve the issue.

Method 2

If method 1 doesn’t work then this means the problem is deeper than you think.  The problem can be triggered by the missing, corrupted, or outdated driver for the device reporting the error. In such a situation it is advisable to reinstall the driver for the device. To do this first uninstall the driver for the device reporting error code 22 then reinstall the driver.

• For this simply click the Start menu, go to the control panel and then click Performance and Maintenance, and then System.
• In the new window, you will then see a tab called Hardware and the Device Manager.
• Double click on the device whose driver you need to uninstall.
• Click on the properties window with a tab marked driver. Then click on the driver you want to uninstall.

To activate changes reboot your PC. Now reinstall the latest and updated version of the driver uninstalled using the Plug and Play feature.

Method 3

Sometimes devices can also get damaged due to registry issues. In such an event, install Restoro. It is a PC Fixer deployed with a registry cleaner. The registry cleaner wipes out all the unnecessary and obsolete files damaging the registry and repairs them in a few minutes. Click here to download Restoro.

As you know, Microsoft Office Word is a program that’s widely used all over the web and it’s because it’s the best program there is when it comes to editing and processing words. However, even when it is the best there is, it is not without its faults and so on as it can still encounter some errors every now and then. One of these errors is the Template_fields errors. When you encounter such an error, you will see a pop-up window. This strange error randomly appears on documents but you need not worry as this post will provide you with possible solutions to resolve the problem. But before you proceed with these solutions, you have to create a backup for all your Word documents to Microsoft OneDrive preferably. To fix the problem, you can try to disable the add-ins or try to start Word in Safe Mode or repair Office. For more details, refer to the options given below.

Option 1 – Disable the Add-ins

Although add-ins enhance Microsoft Word, there are times when they can also cause problems that end up breaking Microsoft Word instead of improving it which is why you have to disable them. Refer to the following steps to do so:

• Open Microsoft Word and then click on File.
• After that, select Options from the menu and then click on Add-ins.
• From there, you’ll see Manage: Com Add-ins as well as a button that says Go.
• Now click on the Go button and wait for a couple of seconds for a new window to appear.
• In the newly opened window, uncheck all the Add-ins and click on OK.
• Restart Microsoft Word and check if the “Template_fields” error is now fixed or not.

Option 2 – Try starting Word in Safe Mode

You might also want to try rebooting Microsoft Office in Safe Mode as it is one of your best shots in finding out whether the problem is internal or external. However, if the problem does not appear after you reboot Microsoft Word in Safe Mode, then there is a possibility that the problem is with Microsoft Office itself. On the other hand, if the problem persists, then it could be a deeper issue.

• First, start Microsoft Word in Safe Mode.
• Next, tap and hold the Ctrl key on your keyboard and open the Word document.
• After that, you should see a dialog box. Click on Yes and see if Microsoft Word opens in Safe Mode.
• Alternatively, you can open the search box and then type “winword.exe /safe” and hit Enter.

Option 3 – Try repairing Microsoft Office

If the first two options didn’t work, then you might want to try repairing Microsoft Office without getting rid of it. In most cases, this usually works in fixing any problems and returns the program back to its default state. To repair Microsoft Office, follow the steps below.

• Right-click on the Start Menu button and select Apps and Features.
• Next, scroll until you see the Microsoft Office program you want to repair and then select the Modify option.
• After that, follow the options to repair Microsoft Office and then restart your PC and see if the “Template_fields” error is no longer present.

PrintNightmare vulnerability has been a struggling issue for Microsoft in the past weeks, each time it seems to be addressed and fixed something new popped up and it still had issues. Microsoft finally addressed the issue but with a price. The default behavior of Point and Print is changed. From this fix onward, the Point and Print driver installation and update behavior will require administrator privileges, which should prevent the exploit to the Windows Print Spooler that could be used by malicious individuals to gain administrative privileges in Windows. The drawback of this fix from Microsoft is that non-elevated users may have difficulty adding or updating printers. Microsoft feels that the security risks caused by PrintNightmare are worth the tradeoff, though. If you really want to let non-elevated users add printers, you can follow the instructions in this Microsoft Support article to disable this mitigation with a registry key. However, doing so will expose you to this known vulnerability and isn’t recommend.

Error 0146 - What is it?

Dell laptop is a great choice for laptop users who like to have the best configuration, fast working platform, and long warranty period. But this does not mean that your errors can’t pop up on Dell laptops. Users can experience a variety of hardware and software-related issues on Dell laptops. And one such error is the error code 0146. This is a typical Dell laptop hard drive-related error code. It can cause your Dell laptop to freeze and system applications to stop responding for a long period of time. Therefore, it is recommended to fix the error immediately.

Solution

Error Causes

Error 0146 may be triggered due to several reasons on your system. These include:

• Program corruption
• Viral infection
• Hard drive issues

Further Information and Manual Repair

The good news is that error 0146 is easy to fix. Here are some of the easy do it yourself methods that you can try to resolve error 0146 on your system:

Method 1 - Run a Virus Scan

Malware and viruses can corrupt and damage the hard drive and trigger error 0146. In such an event, it is recommended that you open your antivirus, update it and run a full virus scan on your PC. Once the scan is complete, remove all the viruses. This will hopefully resolve the error 0146.

Method 2 - Run Your Laptop in Safe Mode and Clean Boot

Another alternative is to run your Dell laptop in safe mode and clean boot. To do this, simply disconnect all the attached devices like wireless printers, routers, and USB keys and turn off your laptop. Turn it on again and then press and hold the F8 key. Make sure you do it quickly before the Windows logo comes up. Now select ‘Safe mode with networking’ and press enter. After that, open System Configuration Utility by going to the start menu and typing ‘msconfig’ in RUN, and then click OK. In the System Configuration Utility click General then selective startup. Now uncheck the load startup items box ad select services and then check the hide all Microsoft services box and disable all. To apply these changes, click ‘Apply’ and then OK.  Now restart your laptop.

Method 3 - Change to SATA Drive

Sometimes error 0146 may pop up due to hard drive configuration changes. If this is the reason for error occurrence, then simply go to Dell Laptop BIOS. Check whether the hard drive configuration has been changed to AHCI SATA from SATA Drive. If it has changed, then it is advisable to change it back to SATA Drive. When you are done back up all your data, and then format your hard drive. It is important to create a backup because formatting will make you lose all your data. Once you format the hard drive, reinstall Windows from scratch.

Method 4 - Run a Registry Scan

If the error 0146 results due to program corruption then there is a possibility that the underlying reason might be registry damage. Therefore it is advisable to run a registry scan and repair it. To do so, download Restoro. This is a cutting-edge and user-friendly PC Fixer integrated with a registry cleaner. Run it to scan for registry issues. It removes all obsolete files corrupting and damaging the registry, repairs important and damaged system files and cleans the registry in the shortest time. Click here to download Restoro and resolve error 0146.

Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent. Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server. Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation. Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught. Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging. This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses. As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last. Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs. The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter. Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch. The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries. The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms. Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage. Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red. Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic. The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note. The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million. Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack. Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million. Other notable viruses The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years: Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove. Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India. Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably. Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather. Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries. Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.” Explorezip: This worm used fake emails to spread to every machine on thousands of local networks. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs. Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.

If you have encountered the “Windows Cannot Find a System Image on This Computer” error while you are trying to restore a system image, then read on as this post will guide you in resolving this problem. A system image is basically a backup of your whole data in the system. For instance, it can be the backup data of your hard disk or the whole hard disk itself, or one of the volumes. This is really useful in some cases like when you are not able to get back into your system for some reason or when your system has been corrupted. In such cases, you can utilize this feature and get going safe and sound. However, not all things go the way as expected like when you make a system image of a drive for instance, or use that backup to restore data and you suddenly encounter the “Windows Cannot Find a System Image on This Computer” error. This kind of error occurs due to a number of reasons but worry not for your data is safe and you can fix this error easily. This error is most likely triggered by changing the name of the “WindowsImageBackup” folder. Renaming this folder will certainly be an issue since it is the one that stores all your data. Aside from renaming the WindowsImageBackup folder, renaming the sub-folders can also cause this error which means that renaming the sub-folders of the WindowsImageBackup folder can trigger the error. To fix this error, here are some suggestions that might help:

Option 1 – Try putting the WindowsImageBackup folder in the Root directory

Windows will have issues finding the WindowsImageBackup folder if it isn’t in the root directory of the drive so if it is not there, the “Windows Cannot Find a System Image on This Computer” error will pop up. When a folder is in a root directory, it means that it shouldn’t be stored within a folder but in the main directory instead.  Thus, you need to put the WindowsImageBackup folder in the root directory to fix the error.

Option 2 – Don’t add any sub-folders in the WindowsImageBackup folder

Another cause of the error is when you add sub-folders in the WindowsImage Backup folder. Adding any sub-folders in this folder will only trigger the error so you should leave the folder as it is and you must not make any modifications to it. So if you have added sub-folders in it, make sure to remove them right away.

Option 3 – Make sure that there is one system image per USB drive

The error can also appear if you’ve stored multiple images inside a single USB drive as it could confuse Windows and will trigger the “Windows Cannot Find a System Image on This Computer” error. Note that storing system images of different volumes of your hard disk in a single USB will prevent you from restoring your data.

Option 4 – Try renaming the System Image folder

If you’ve just changed the name of the System Image folder after you store it on a USB stick or other external device, then it’s no wonder why you’re getting the “Windows Cannot Find a System Image on This Computer” error. Windows search for the default name, “WindowsImage Backup” folder when restoring your data so if it is not able to find it, it throws up this error instead. To fix the error, you need to change the folder back to its default name which is “WindowsImageBackup”.

Option 5 – Check the WindowsImageBackup sub-folders

As mentioned earlier, renaming sub-folders in the WindowsImageBackup folder can trigger the error so if you have renamed sub-folders in this folder, you need to change them back to their default names so that you can restore your data peacefully.