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Most Common Microsoft Outlook errors

When you have a program, you know before you even start to use it or even know how that you are going to have problems with it. There are always going to be error messages and things that don’t work on any program you buy or download; guaranteed. Even some of the most famous program developers in the world make mistakes from time to time and it is a small price to pay for the programs you get and that is a fact. Microsoft Outlook is like any other program; it has its errors. Here are some of the most common errors for Microsoft Outlook on your computer.

1. Problem receiving emails

Sometimes you can be waiting on really important emails. It is really infuriating when you know that they have been sent, however every time you check your email box, there is nothing there! Your inbox is empty and your patience is wearing thin, so could it possibly be an error with Microsoft Outlook? There is a high probability that this is the problem. The program can be a bit slow on receiving emails sometimes, often even by days. This can be caused by any number of things, from having too many emails coming through or having too many emails in your inbox. If you click ‘send and receive’ at the top, it should speed up your emails coming through, however, so give that a try if you’re waiting on anything to come through. If this doesn’t work, however, your inbox may be full. Try permanently deleting some useless messages and then click ‘send and receive’ again. All your emails should come through then!

2. General slow performance

Outlook, while it has its advantages, can often be very slow. It is probably slower than some other email programs that require a browser but it is quicker to access, which may make up for this fact. However, sometimes sluggish performance can be really irritating, so it may be wise to try and fix it if you can. One of the reasons it may be acting slow is if you have too many other Windows applications open. Applications that may interfere with your Outlook’s speed could be anything from Microsoft Word to Windows Live Messenger. If any of these are open, try closing them and see if that helps with the speed problem.

3. Corrupt files

.dbx files are not accessible by Microsoft Outlook. Therefore, they can cause problems with your emails if you have them within them. To solve this problem, you may have to delete all of your attached email accounts and then reattach them before you can open your emails again. These corrupt files can also cause you to be unable to delete emails. You will need to transfer these deleted corrupt files into a separate deletion folder as this is usually caused by the folder being corrupt. Of all the other most frequent problems with Microsoft Outlook, however, this is probably the least likely to happen, which shows how few problems there actually are with this application after all that!

Conclusion

So there are the most common problems with Microsoft Outlook! Not much wrong at all, is there?

Every computer has to have a graphic card, it is one of the essential components in order for the computer to work. If you have a second-hand computer, got one as a gift, or similar, there is a high chance that you do not really know which components are inside. Luckily finding out which graphic card you have inside is quite easy. Right-click the taskbar and select Task Manager Click the Performance tab at the top of the window, if you don’t see the tabs, click “More Info.” Select “GPU 0” in the sidebar. The GPU’s manufacturer and model names are displayed at the top right corner of the window. You’ll also see other information, such as the amount of dedicated memory on your GPU, in this window. Windows 10’s Task Manager displays your GPU usage here, and you can also view GPU usage by application. If your system has multiple GPUs, you’ll also see “GPU 1” and so on here. Each represents a different physical GPU.

In case you don’t know, the Windows Script Host provides capabilities such as batch files but it also includes many other features like it can be used by a user manual as well as created by the operating system to automate the flow of operations in the system. However, there are a lot of errors that could take place in such a process. One of them is the following error:

“Script: <PATH of the VBS Script> Line: x Char: x Error: The description of the error. Code: xxxxxxxx Source: (Source of the error)”

At the time of writing, it isn’t clear yet what the root cause of the error really is but there are several potential fixes you can check out to fix it. You can try to run the System File Checker or set the default value for the .vbs key, or troubleshoot the problem in a Clean Boot State. You could also try to repair Install Windows 10 or scan your computer for malware. For more detailed instructions refer to the following options.

Option 1 – Try to run a System File Checker scan

• In the Windows Start Search, type “command prompt” and right-click on Command Prompt from the search results, and then select the “Run as administrator” option.
• After opening Command Prompt with admin privileges, type the “sfc /scannow” and tap Enter to execute it.
• Once the scan is finished, restart your computer and see if the Windows Script Host error.

Option 2 – Try setting the default value for the .vbs key

• Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and tap Enter to open the Registry Editor.
• Next, navigate to this registry path: ComputerHKEY_CLASSES_ROOT.vbs
• From there, double click on the default string and change its Value data to “VBSFile”.
• Exit the Registry Editor and restart your computer for the changes to take effect.

Option 3 – Try troubleshooting the problem in a Clean Boot State

Setting your computer in a Clean Boot State can help you diagnose and later troubleshoot the problems in your computer. During this state, the system will start with a minimal number of drivers and startup programs that help in isolating the problem with the interfering software. To put your computer in a Clean Boot State, follow the given steps below.

• Log onto your computer as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.

Option 4 – Try to repair install Windows 10

• First, you have to click this link and then click the Download Tool Now button.
• Next, click the “Use the tool to create installation media (USB flash drive, DVD, or ISO file)…” option and follow the next given instructions on the screen.
• Now select the ISO file option in step 5.
• After that, you should now have an ISO file.
• Next, go to the location where you’ve downloaded the ISO file.
• Then right-click on the Windows 10 ISO file and select the Open with option and then select File Explorer.
• Now click on “setup.exe” and follow the next instructions that appear on the screen. When asked, you have to select either Nothing (clean install) or Keep personal files only option. Take note that you must not select the “Keep personal files, apps, and Windows settings”.

Option 5 – Try scanning your computer using Windows Defender

It is possible that your computer is infected with malware which could be why you’re getting the Windows Host Script error. Thus, you need to scan your computer using Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

Scammers have decided to target Windows’s 10 App installer process in order to infect your computer and steal your data. As in most usual online scams, everything starts with a strange email containing threats and other poorly written and composed speech. At the end of the given email, there would be a link claiming that you, of course, need to read it and follow instructions about the threat, if you click the link it will open a web page where you will have an innocent-looking PDF file with more information about the threat itself. If you click on a seemingly innocent PDF file it will summon Windows 10's AppInstaller.exe tool, kickstarting a download-and-run process that'll put you in a bad place very quickly. From there, you'll have to deal with the dangers of malware BazarBackdoor, including data and credential theft. This kind of scam is nothing new but the interesting thing here is that it uses App installer and by clicking on a link you are opening and giving permission for a malicious crook to use it. So, stay safe and do not click on any links from unknown emails no matter what.

Recently, a number of users reported an error while trying to update their computers. This particular Windows Update error has an error code of 0x80073701. If you are one of the users who encounter this error, then read on as this post will guide you on how exactly you can fix it. Here’s the exact context of the error:

“Updates failed. There were problems installing some updates, but we’ll try again later. 2019-07 Cumulative Update for Windows 10 Version 1903 for x86-based Systems (KB4507453) – Error 0x80073701”

The Windows Update Error 0x80073701 also comes with a code “ERROR_SXS_ASSEMBLY_MISSING” which indicates that some system files are missing on your computer that caused the update installation failure error. Although this Windows Update error does not cause any severe issues, it is still being reported in the section of Windows Update where it is marked as “Update failed”. There are several potential solutions you can check out to resolve this error. You can try to run the DISM tool or the SFC or System File Checker scan. You could also try to run the Windows Update troubleshooter. For more information, make sure to follow the options given below.

Option 1 – Restart your computer and try installing the Updates again

Restarting your computer can also help in fixing the Windows Update failed to install error 0x80073701. There are cases where the issue resolves on its own as it could just be some simple network or PC error.

Option 2 – Try to run the DISM tool

Running the DISM Tool helps in repairing the Windows System Image as well as the Windows Component Store in Windows 10. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt as admin.
• Then type in this command: exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

After you run this tool, a log file is created at C:WindowsLogsCBSCBS.log. On the other hand, if the Windows Update client is already broken, you will be prompted to use a running Windows installation as the repair source or use a Windows side-by-side folder from a network share, as the source of the files. Although the chances of this happening is less, if it turns out to be the case, you need to run an advanced command in the DISM tool to repair a broken Windows Update. Just repeat the process above but use the following command instead:

DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:RepairSourceWindows /LimitAccess

Option 3 – Try to run the System File Checker

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be causing the error 0x80073701. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow
• The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Restart your computer.

Option 4 – Try running the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update error 0x80073701. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

If your Windows 10 computer is currently experiencing high CPU usage because of the IAStorDataSvc, read on as this post will show you what you can do to resolve the issue. The high CPU usage of IAStorDataSvc is because of the Intel Rapid Storage Technology. It appears as a Service that may not only result in high CPU usage but also high disk and memory usage, as well as slow computer performance and overheating of your PC. This problem usually occurs on HP computers and on any computers that are using the Intel Rapid Storage Technology. You might also notice that your fan runs at high speed each time this issue occurs with the average CPU usage spiking up to 50%. Take note that this service is used to speed up file access. However, if you are not using an SSD on your computer, then it’s not really necessary for you to have the IAStorDataSvc installed. To resolve this issue, here are some options you can try.

Option 1 – Update or reinstall or remove the IAStorDataSvc driver

Before you proceed, you need to decide first if you want to update, reinstall or remove the IAStorDataSvc driver. To make things easier for you, you can try downloading the latest driver from the Intel Download Centre and then install it on your computer. If it works, good, but if not, you might want to consider removing the driver completely and just let the Windows Update look for the right driver for your computer after you restart it. There are times when the drivers installed are incompatible with the latest Windows update which results in issues like high CPU usage.

• Tap the Win + X + M combination on your keyboard to open the Device Manager.
• After that, look for the Intel Rapid Storage Technology driver, right-click on it and then select Uninstall.
• Now restart your computer for the changes to take effect.

Note: You might also have to go to the list of installed programs and uninstall a program that is listed as “Intel Rapid Storage Technology driver”. To do so, refer to these steps:

• In the Cortana Search box, type “control panel” and from the search results that appear, click on Control Panel.
• After opening Control Panel, select Programs > Programs and Features which will open the list of installed programs on your computer.
• From there, look for Intel Rapid Storage Technology and uninstall it.

Option 2 – Try to disable the IAStorDataSvc via Services Manager

• Tap the Win + R keys to open the Run dialog box.
• Then type “services.msc” in the field and hit Enter to open Services.
• Next, look for the Intel Rapid Storage Technology services from the list of services and then double-click it.
• Then change its Startup type to “Disabled”.
• After that click on the Apply button and then OK to save the changes made.
• Now exit the Services window and check if the problem’s resolved.

Gaming has come a long way since its infant days and grown from spending some free time between coding to full e-sport events watched worldwide. As have some basic peripherals been upgraded like gaming keyboards and gaming mouse so have headsets been receiving similar treatments. In today's article, we are presenting you with some of the best headsets specifically designed and made for gaming purposes. If you are looking for headphones for music listening look elsewhere, these bad boys are all made for replicating precise audio positioning and similar technology specifically tailored for games.

SteelSeries Arctis 7P/7X

The best gaming headset overall for PC, PS5, PS4, Xbox Series X/S, Xbox One, Switch, Android The SteelSeries Arctis 7P/7X is the best gaming headset overall, offering great sound, consistent wireless performance, and a comfy, attractive design at a reasonable price. The headset’s 2.4-GHz wireless connectivity keeps you glued to your game without any lag or interference. Even better: Thanks to its USB-C dongle and USB-A adapter, you can enjoy wireless performance with any system, from a PS5 to a Nintendo Switch in handheld mode, to an Android phone.

Razer Blackshark V2

Razer's best headset yet for PC, PS5, PS4, Switch, Xbox One The Razer Blackshark V2 is probably the best headset that Razer has ever made. This mid-range wired headset provides fantastic sound for both games and music, particularly thanks to its innovative THX profiles. The famous film audio company has lent its expertise to make the Blackshark V2's surround sound realistic and nuanced, especially for a handful of games like Apex Legends and Sekiro: Shadows Die Twice, which have their own optimized profiles.

Logitech G Pro X

Built for tournament play for PC, PS5, PS4, Xbox One, Switch The Logitech G Pro X delivers tournament-grade performance for a reasonable price. The headset's distinguished black design sets itself apart from the competition, in no small part thanks to its flexible headband and supremely comfortable foam and leatherette earcup options. The Go Pro X delivers rich, direction-accurate sound out of the box whether you're playing on PC or console. It's also the first gaming headset to sport a built-in Blue microphone, allowing for extra-crisp voice chat whether you're practicing with your Apex Legends squad or streaming to your online fans

SteelSeries Arctis Pro

Audiophile sound for gamers made for PS4, PC (with GameDAC), Xbox One, Switch, mobile (analog) SteelSeries’ Arctis Pro + GameDAC brings audiophile-grade features to the already excellent Arctis design. This headset includes a DAC (digital-to-analog converter), which allows it to deliver high-resolution 96-kHz/24-bit audio. The GameDAC also allows for a wealth of customization options, whether you want to fine-tune sound via an equalizer or customize the headset’s subtle RGB lighting.

HyperX Cloud Stinger

Big sound on a budget for PS, PS5, PS4, Xbox Series X/S, Xbox One, Switch, mobile The Stinger’s sturdy, feather-light frame and soft, faux-leather earcups make for one of the best gaming headsets on a budget, and its handy on-ear controls and solid microphone certainly don’t hurt either. Finding a comfortable fit is arguably the most important thing you can look for in a gaming headset, and the Cloud Stinger doesn’t disappoint on that front. The Stinger also offers very solid audio quality for the price, though things can get a bit blown out at max volume

Corsair Virtuoso RGB Wireless XT

The best gaming headset with Bluetooth for PC, PS4, PS5, Xbox One, Xbox Series X/S, Switch (handheld), mobile The Corsair Virtuoso RGB Wireless XT is one of the best gaming headsets that Corsair has ever made. Not only is this headset extremely comfortable, but it also provides excellent sound quality. It works wirelessly with PCs and PlayStation consoles via USB, as well as mobile devices, streaming players, and smart TVs via Bluetooth. You can connect it to a Switch, Xbox controller, or older system via a 3.5 mm audio cable. There's very little that the Virtuoso RGB Wireless XT can't do.

Xbox Wireless Headset

The best Xbox affordable headset for Xbox Series X/S, Xbox One, PC, mobile The Xbox Wireless Headset is exactly what the name suggests: a wireless headset that works particularly well with Xbox consoles. Whether you have an Xbox Series X, an Xbox Series S, an Xbox One, or a Windows 10 PC with an Xbox controller adapter, this headset can provide fantastic sound with a simple pairing procedure. Not only that: the Xbox Wireless Headset supports Bluetooth as well, meaning that you can listen to music or take calls on your phone while you game.

Razer Kaira Pro

The best Xbox Series X wireless headset for Xbox Series X/S, Xbox One, PC, mobile Debuting alongside the Xbox Series X, the Razer Kaira Pro is arguably one of the best gaming headsets for Microsoft's next-gen console. This sleek, lightweight wireless headset pairs with Xbox consoles right out of the box. But you can also use it with PCs and mobile devices, thanks to built-in Bluetooth capabilities. The Kaira Pro is not terribly expensive, and the sound quality is excellent, particularly for video games.

SteelSeries Arctis 1 Wireless

Affordable wireless for PC, PS5, PS4, Switch, Mobile (USB-C wireless), Xbox One (wired) Getting good wireless performance has never been this seamless, or affordable. Thanks to its high-speed, discrete USB-C dongle, the SteelSeries 1 Arctis Wireless allows you to instantly enjoy wireless game audio from your Nintendo Switch, Android phone, PS4, or gaming PC, with none of the convoluted pairing or interference that comes with Bluetooth-based headsets. It’s worth mentioning the Nintendo Switch functionality again, as it’s hard to get a wireless headset for Nintendo’s handheld hybrid.

Turtle Beach Elite Atlas Aero

Absolute best in wireless for PC, PS4 (Wireless); Xbox One, Nintendo Switch, Mobile (Wired) The highly customizable high-end headset that's especially ideal for PC, the new Turtle Beach Elite Atlas Aero is one of the best gaming headsets out there. This premium headset packs an incredibly comfortable pair of gel-infused ear cushions, which are also designed to play well with glasses. The Aero's 50mm speakers sound great out of the box, and it comes with a solid noise-canceling microphone to boot.

HyperX Cloud Alpha

Superior style, sound, and value for PC, PS4, PS5, Xbox One, Switch, mobile Thanks to a sturdy metal frame, a slick red-and-black paint job, and some of the most comfortable leatherette earcups this headset is really a steal for its price. This is a headset that you can transport with you anywhere and connect to almost any system, without ever having to worry about it breaking.

Turtle Beach Stealth 700 Gen 2

Console-centric wireless sound with Bluetooth for PC, PS4, Switch, Xbox One, mobile The Turtle Beach Stealth 700 Gen 2 is one of the best console headsets on the market, particularly if you want a wireless model. This peripheral boasts great sound, plush earcups, and two kinds of wireless functionality. The PS4 version can connect to either PS4 or PC via a USB dongle; the Xbox One version can connect to the Xbox One right out of the box. Both versions can connect to mobile devices and PCs via Bluetooth. It's an extremely convenient feature, especially since very few gaming headsets offer Bluetooth functionality.

Astro A20 Gaming Headset Gen 2

Wireless headset for both PS5 and Xbox Series X and PC, PlayStation, Xbox, Switch, mobile The Astro A20 Gaming Headset Gen 2 is an ambitious and full-featured headset from one of the most trusted manufacturers on the market. This wireless peripheral offers excellent sound quality and a comfortable fit. More than that, though, the Astro A20 can also connect wirelessly to both the PS5 and the Xbox Series X, which is a rare feat, even among the best gaming headsets.

Razer Barracuda X

The best wireless Switch headset also for PC, PS4, PS5, Switch, mobile The Razer Barracuda X is a wireless gaming headset that's ideal for the Nintendo Switch and mobile platforms. Thanks to its small USB-C dongle, it can connect wirelessly o the Switch in handheld mode, a rarity among gaming headsets. However, it also comes with a USB-A adapter, which means you can connect it to just about any other system you like, from PC to PS4, to Switch in docked mode. The USB-C dongle also fits neatly into a PS5.

What is Backup Error 0x80070002?

Error 0x80070002 shows once you’re done backing up files through the Windows Backup program on a system running Windows 7, you see a notification that pops up with a message that reads something like: “Check your backup results. The backup completed but some files were skipped.” You try finding out the reason and you hover over to the Options button beside the message, then you get to read the following lines: “Check your backup results. The backup completed but some files were skipped. View skipped files.” Upon clicking the “View Skipped Files” option, the backup error 0x80070002 pops up on your screen and you’re left scratching your head, wondering what you’re going to do now.

Solution

Error Causes

There are multiple error logs that you will encounter in backup error 0x80070002 as per different conditions. The two most common cases in which this error shows up are stated below:

Case 1

You will see the following message when you press “View skipped files”: “Backup encountered a problem while backing up file C: Windows/System32/config/systemprofile. Error: (The system cannot find the file specified. (0x80070002))” You will face this case if you have backed up a library that included custom folders that were located in your user profile.

Case 2

Upon pressing “View Skipped files” you will encounter the below-mentioned messages: “Backup encountered a problem while backing up file C:/Users<User>AppDataLocalLow. Error: (The system cannot find the file specified. (0x80070002))” “Backup encountered a problem while backing up file C:/Users<User>Contacts. Error: (The system cannot find the file specified. (0x80070002))” “Backup encountered a problem while backing up file C:/Users<User>Searches. Error:(The system cannot find the file specified. (0x80070002))” You are likely to encounter any of these messages in case:

• The Windows Backup program is trying to back up your files in either one or all of these folders (LocalLow, Searches, Contacts).
• All three of these folders don’t exist in your system.

Keep in mind that all three of these folders exist due to the installation of certain programs and applications on your system.

Notes

The backup error 0x80070002 is also found to occur while using USB devices instead of storage devices. Other occurrences include the times when input/output (I/O) operations are performed on the USB device, which results in failure.

Further Information and Manual Repair

To make sure this issue is resolved, you will have to follow either one of the following solutions as appropriate to your situation:

Solution for Case 1

1. Ignore the error. The store files of the custom library in your user profile will not be created as backups.
2. Transfer the library folder from where it currently exists to a place outside its current folder (user profile). For instance, you can move the library folder to an entirely new destination such as “C: My Folders”
3. Remove the library folder from the list of files that you are backing up using the Windows Backup program. Then, add the original place of the library’s content in the list.
4. Go back and check step two. If carried out successfully then add a link to the folder you moved from the library. Check to see if the backup includes the library folder. To make sure, you have to do as follows:

• Go to Start and select your username.
• Hover across to the folder you wish to move, right-click on it and select “Cut”.
• Head to the navigation pane and search for the area you will store the folder in, right-click and select “Paste” so that the folder is moved to that location.
• Right-click on the folder that you just moved and select “Copy”.
• Go back to Start, select your username, right-click any vacant space in your folder and select “Paste Shortcut”.

Note: If you want to store the folder in a different place other than the folder in which it currently exists (user profile), you will need to create a new folder. In order to do so, go to the Windows Explorer menu and look up the root of the drive. Hit “New Folder” and then choose edit to change its name. You can set it as any name for instance, “My Folders”.

Solution for Case 2

You can ignore this error safely. However, if you wish not to see this error in the future during your backup operations then you will need to carry out the following steps:

1. Create all the folders listed in the error message including LocalLow, Contacts, and Searches.
2. Remove all of these folders from the Backup settings to make sure they aren’t being backed up then add the folders which are in their original place. To carry out this procedure, you will have to follow the below-mentioned steps:

• Head over to the Control Panel and open “Backup & Restore”.
• Go to the Backup section and select “Change Settings”.
• Click Next in the Setup backup dialog box.
• Select “Let me choose” in the dialog box termed “What do you want to back up” then proceed by clicking Next.
• Expand Data Files, expand <user> Libraries, expand Additional Locations then proceed by clearing out the AppData Folder, searches, and Contacts checkboxes.
• Expand Computer as well as the item for your system drive (expand Local Disk (D:)), expand users, expand <user>, then go to AppData, Searches and Contacts and mark them if they are present.
• Proceed by clicking next and select “Save Settings” then exit.
• Back to Backup & Restore, select Back up now and your new backup will begin proceeding. The entire process will be complete without any errors now.

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.

Cache files are temporary files that have been created by various applications and services when used.  As temporary files, they are safe to be removed and deleted from the system since the application or service will create new ones when needed but sadly will not remove old ones, this task is left to OS itself. Automatic Windows cleanups can mostly take care of these things but for top-notch performance clearing cache manually is a far better option. We will here explore various cache temporary files, where they are, and how to clean them. Sit back and let’s do some cleaning!

Clear cache using Disk Cleanup

1. Open Start menu and search Disk Cleanup
2. Click on it in search results
3. Click on the drives drop-down menu and select the drive where is Windows 11 installed
4. In the Files to Delete section enable all boxes and click on OK
5. Click on delete Files to confirm

Clear Microsoft store cache

1. Press ⊞ WINDOWS + R to open the run dialog
2. Type in WSReset.exe and press ENTER
3. Black blank windows will appear, wait for the window to close itself and you are done

Clearing location cache

1. Press ⊞ WINDOWS + I to open location history
2. Select Privacy & Security
3. In the App Permissions section click on Location
4. On-Location page click on Clear

Clear and flush DNS

1. Press Start and search for Windows Terminal
2. Click on Terminal in search results
3. Type in: ipconfig /flushdns and press ENTER

And that is that!