How to Fix Error 0x00000643

What is Error 0x8007042c?

0x8007042c is a Windows Firewall error code. This error hampers your ability to turn on Windows Firewall on your PC. Firewall is a network security system. It establishes a barrier between a trusted, secure internal network and another network (the internet) that is assumed unsecure. Error 0x8007042c is displayed in the following format: “0x8007042c” error message when you try to start Windows Firewall

Solution

Error Causes

Error 0x8007042c may pop up on your computer screen because of many reasons. These include:

• Firewall service is disabled
• Malware infection
• Registry corruption

Further Information and Manual Repair

The good news is that this error code is easy to resolve. To repair, you don’t to be technically sound or hire a professional for the job. Try our DIY methods illustrated below to fix the problem by yourself in a few minutes.

Method 1 - Start Firewall Manually

This method allows you to start Windows Firewall service manually and then make sure that it starts automatically in the future. This can be done by following these steps, first, go to the start menu and then type services in the search box. Right-click services and then click RUN as Administrator. Now scroll down until you see Windows Firewall. Then double click on it. After that, click the startup type box and then click Automatic. If ‘Service Status’ is stopped, then click Start. Now click ‘Apply’ and then press OK. Scroll until you see ‘Base Filtering Engine’, double click it. If again the ‘Service Status’ is stopped, click start. Press Apply and then OK to activate changes. Now restart Windows, Firewall will be enabled.

Method 2 - Remove Malware

If the error cause is a malware infection, use the Microsoft Safety Scanner to remove malware immediately from your PC. Download it from Microsoft’s official website, install, accept terms and then run it to perform a quick scan. The Microsoft Safety Scanner will scan and remove all malware infecting your PC. Once this is done, click Start and then type Windows Firewall in the Search box. Click Windows Firewall and the navigation pane of Control Panel; Click Turn Windows Firewall on or off. Click Turn on Windows Firewall for each network location and then press OK to activate changes.

Method 3 - Repair the Registry

Sometimes the underlying cause can be registry corruption. In such a situation, download Restoro. It is a PC Repair Tool deployed with a registry cleaner. It scans and removes all the bad entries and files infecting your PC, cleans and repairs the registry in a few minutes. Click here to download Restoro.

USB Kill, a USB device is able to fry and damage your computer, mobile phone, router, etc. This device is quite dangerous and can kill electronics the moment it is inserted into an available port. By now people should know that they should not put unknown USB sticks into their devices because of potential virus and malware threats but this raises using unknown sticks to a whole new level.

Kill kits are not really new to the market, they have existed before but lately, technology really progressed and the latest USB sticks are really good, their success rate is around 95% which is pretty high and should not be taken lightly.

The second thing that you really should not play with strange USB sticks is that they dropped in price really hard, although top Kill kits will still go as high as around 300 USD, there are really cheap ones lurking in Ali Express that are just 6 USD!!! that makes them affordable devices for the mass market.

The device is made to take energy and current from the port it is plugged in, multiply it and release its charge back into the device, successfully frying some components immediately. Some more professional Kill sticks can even fry devices even when the device itself is not powered and can be even started remotely.

The point of this article is to make you aware that you should not in any kind of circumstances use and plug-in USB sticks into your devices that you do not know where they come from, especially from the mail!!

Error 0x80004005 - What is it?

Error 0x80004005 is a typical Outlook error. This error code occurs either when sending emails or receiving them. The error message may be displayed in either of the following formats:

‘Sending and receiving reported error "0x80004005": The operation failed.’ ‘This message could not be sent. Try sending the message again or contact your network administrator. The client operation failed. Error is [OX80004005- 0X0004B9-OXOO501].’

Error Causes

There are several causes for the error 0x80004005 such as:

• The Script Blocking Feature Enabled While Using Norton Antivirus
• Spyware
• Viruses
• Registry problems-Missing or corrupt registry keys

It is advisable to repair and resolve error 0x80004005 immediately as it may cause a great deal of inconvenience to you. This error may hamper your ability to receive and send emails from your Outlook account and lower your productivity too as you may be unable to communicate with your peers.

Further Information and Manual Repair

To fix error 0x80004005, you don’t have to wait for the network personnel or be a technical expert yourself. This may be a critical error but the good news is that it is easy to resolve. Here are some effective methods and quick fixes to resolve the error 0x80004005 instantly.

Method 1: Disable Script Blocking Feature in Norton Antivirus

After installing Norton Antivirus on your PC, if you start experiencing the Outlook error 0x80004005, then the best way to resolve it is to simply disable the script blocking feature. However, the downside of this is that by disabling this feature your PC will become vulnerable to viruses and malware.

Method 2: Disable the New-Mail Notification Feature in MS Outlook

If you don’t have Norton Antivirus downloaded on your PC, then try method 2. This method involves disabling the new-mail notification feature in MS Outlook. The error code 0x80004005 is often resolved by switching off this feature. Try it to see if it works. To disable the new-mail feature all you have to do is open your Outlook account and then go to the Tools menu, then go to Options and then select the ‘Preferences’ tab. After that click on the ‘Emails Options’ tab and then simply uncheck the check-box against ‘Display a notification message when new mail arrives’. To confirm changes press OK.

Method 3: Scan for Viruses

The error 0x80004005 may also be triggered due to viral infection or spyware. Such malicious software enters your PC through phishing emails and while downloading files and attachments. You may not be aware of this but your PC may be infected by viruses. It is important you remove them immediately as they can expose you to serious risks including privacy issues, identity thefts, data breaches, and more.

Building your skill set could be a very important thing, especially in today’s world, and what’s the best way other than online learning classes. You are not exposing yourself to pandemics, staying safe in the warmth of your home and most of the courses are free. Presented here are sites that I believe will and can help you with your goal of learning desired material whatever that might be. Sites are listed in no particular order with a description of what each has to offer.

Coursera

https://www.coursera.org/ Coursera was one of the pioneers when it comes to college education online. When it started all courses were free and offered certificates if the taker has done tasks with a passing grade. Today not everything is free but still, there are tons of free courses that can help you to learn something new and to advance in your work or hobby. Google is using the Coursera platform to deliver its courses to the audience and besides google a lot of academic professors from Princeton, Stanford, John Hopkins and many more are presently offering their course material.

edX

https://www.edx.org/ edX has evolved from MITx, MIT’s free initiative to place some free academic lectures from its classrooms free into the world. Since it was rebranded into edX it started including other big university names like Berkeley, University of Texas System, Harvard, and many more. Since its infant days, edX has expanded and included many areas that it offers coursework from arts to science. Certificated today are mostly not free but course videos are, so if you care to learn and not wave certificates around this is a great place to do it.

Udemy

https://www.udemy.com/ Udemy has a little different approach to course material than previously mentioned websites. Teachers on Udemy are mostly people that are working in a given field. Programmers will teach programming, fitness instructors will teach training, etc. There are vas variety of topics even on lifestyle, hobbies even gaming to more serious ones like software developing hardware, etc. There are free courses but mostly are one-time purchases with unlimited access to course material and with frequent discounts udemy might be a good place to look if you can find anything interesting.

Alison

https://alison.com/ Alison is kind of Udemy if we are talking about course material and who is teaching, the difference however is that it has more free content and it is one of the rare websites on this list that has Language courses. Courses vary from beginner level to more advanced ones.

Udacity

https://www.udacity.com/ Udacity was also one of the earlier websites to offer free courses, in today’s world it still has free material but there is also paying one. The big difference from other competitors is that Udacity focuses mostly on programming, data science, and web development and it is very strong in this field. There are no courses about art. Music or similar, mostly IT stuff is covered here. If this is something that interests you, make a free account and give it a go.

Codecademy

https://www.codecademy.com/ Codecademy is a website mainly focused on teaching you how to code. Pro plan is there but there are a lot of basic and free courses on the mentioned subject. The curriculum is really wide covering Python, R, Java, JavaScript, SQL, Ruby, C#, C++, Swift, PHP, HTML, CSS and more so I am sure that if you are interested in coding this would be a pretty good place to find things. Besides pure language coding courses site offers also, Cybersecurity, Web design, Data science, web development, Game Development, Mobile Development, and many more courses on provided subjects.

Academic Earth

https://academicearth.org/ Academic Earth has been built with one simple premise: Everyone deserves access to education. Lead by this kind of mindset on Academic Earth you will find well, academic courses similar to ones found on edX and Coursera, but from mentioned sites here all courses are free and you will find only academic ones, there are no entrepreneur or expert courses here, just pure academic ones. If you wish to see and learn something the way it is taught in Harvard, Berkeley, MIT, etc this is the place for you.

Khan Academy

https://www.khanacademy.org/ Khan academy is completely free and it is offering courses matching certain grades for children. It is offering courses for all 8 years of elementary school, math courses for high school and college with some coursework on topics like science, arts & humanities, reading, life skills, etc. Despite not being on the same level as some university courses presented on other mentioned websites Khan Academy is a good place to learn a lot of basic skills that you could build upon later.

Conclusion

I hope that I have helped you in some way to expand your skill set and learn something new with provided sources and I hope to see you again on errortools.com

Nectar Toolbar is a Browser addon for Internet Explorer developed by AIMIA Coalition Loyalty. This addon changed your default search provider to Yahoo UK. While installed, you might see additional unwanted ads and sponsored links injected in the search results.

From the Author: We all search the web every day for information from handy how-to’s, must know news about shopping. So wouldn’t it be great if you could collect extra Nectar points just for doing something you do already? Like to shop online? Nectar Search will also tell you when you’re on a shopping website (like Argos, Debenhams, Next, Play.com, and Apple) where you can collect points too.

Several anti-virus scanners have marked this addon as a Browser Hijacker and are therefore not recommended to keep on your computer.

About Browser Hijackers

Browser hijacking means a malicious program code has power over and modified the settings of your browser, without your permission. Browser hijackers could do more than just changing home pages. In general, hijackers are developed for the benefit of online hackers often through income generation that comes from forced ad mouse clicks and website visits. Nonetheless, it isn’t that harmless. Your web safety is compromised and it is also really annoying. In a much worst case, your browser could be hijacked to download malicious software that will do a great deal of damage to your computer.

Key symptoms that your browser has been hijacked

When your browser is hi-jacked, the following can happen: you notice unauthorized changes to your internet browser’s homepage; you observe new unwanted favorites or bookmarks added, usually directed to advertisement-filled or porn websites; the default browser configurations have been changed and/or your default web engine is altered; unwanted new toolbars are added to your internet browser; you might notice numerous pop-up adverts on your computer screen; your browser has instability issues or exhibits frequent errors; You can’t access particular websites, especially anti-malware websites.

Exactly how they invade computers

A browser hijacker can be installed on your computer or laptop when you go to an infected site, click on an e-mail attachment, or download something from a file-sharing site. Many internet browser hijackings originate from add-on programs, i.e., browser helper objects (BHO), toolbars, or plug-ins added to browsers to provide them additional features. Other times you might have accidentally accepted a browser hijacker as part of a software bundle (generally freeware or shareware). Popular examples of browser hijackers include CoolWebSearch, Conduit, OneWebSearch, Coupon Server, RocketTab, Delta Search, Searchult.com, and Snap.do. Browser hijacking can bring about serious privacy problems and even identity theft, affect your web browsing experience by taking control over outgoing traffic, drastically slows down your computer or laptop by depleting lots of resources, and lead to system instability also.

Browser hijacker removal methods

Some browser hijacking can be easily stopped by identifying and eliminating the corresponding malware software from your control panel. However, most hijackers are quite tenacious and require specialized applications to get rid of them. Moreover, browser hijackers could modify the Windows registry so it can be extremely tough to fix manually, particularly when you are not a tech-savvy person. Browser hijackers can be effectively removed by installing and running an anti-malware application on the affected computer. To get rid of any browser hijacker out of your computer, you could download this particular top-notch malware removal application – SafeBytes Anti-Malware. Together with anti-malware, a PC optimizer software, similar to Total System Care, could help you correct Windows registry errors, remove unwanted toolbars, secure your internet privacy, and stabilize programs installed on your computer.

Find Out How To Install Safebytes Anti-Malware On An Infected Computer system

All malware is bad and the consequences of the damage will vary based on the specific type of malicious software. Certain malware goes to great lengths to stop you from downloading or installing anything on your computer system, particularly anti-virus programs. If you are reading this, you probably have infected by a virus that stops you from installing a security program like Safebytes Anti-Malware. Follow the instructions below to remove malware through alternative methods.

Install in Safe Mode with Networking

Safe Mode is a unique, simplified version of Windows where just essential services are loaded to counteract malware and other problematic programs from loading. In case the malicious software is set to load immediately when the PC boots, switching to this mode could prevent it from doing so. To boot into Safe Mode, hit “F8” key on the keyboard right before Windows logo screen appears; Or right after normal Windows boot up, run MSCONFIG, look over Safe Boot under Boot tab, and then click Apply. Once you are in Safe Mode, you can try to install your anti-malware application without the hindrance of the malware. After installation, run the malware scanner to eliminate standard infections.

Download the anti-malware program in a different internet browser

Some malware only targets particular internet browsers. If this is your case, employ another browser as it might circumvent the computer virus. In case you suspect that your Internet Explorer happens to be hijacked by a computer virus or otherwise compromised by online hackers, the most effective course of action is to switch over to a different web browser such as Mozilla Firefox, Google Chrome, or Apple Safari to download your favorite security application – Safebytes Anti-Malware.

Make a bootable USB anti-virus drive

Another solution is to save and run an anti-malware software program entirely from a Thumb drive. To run antivirus from a thumb drive, follow these simple steps: 1) On a clean computer, install Safebytes Anti-Malware. 2) Plug the USB drive into the clean computer. 3) Double-click the Setup icon of the anti-malware software to run the Installation Wizard. 4) Select the drive letter of the pen drive as the location when the wizard asks you where you would like to install the anti-virus. Follow the onscreen instructions to finish the installation. 5) Now, insert the USB drive into the corrupted PC. 6) Run the Safebytes Anti-malware directly from the pen drive by double-clicking the icon. 7) Simply click “Scan Now” to run a complete scan on the affected computer for malware.

SafeBytes Anti-Malware Features

To protect your laptop or computer from various internet-based threats, it’s important to install anti-malware software on your personal computer. However, with countless numbers antimalware companies out there, these days it is hard to decide which one you should buy for your laptop. Some of them do a great job in eliminating malware threats while some will damage your PC by themselves. You must be careful not to pick the wrong product, especially if you buy a paid application. On the list of strongly recommended software by industry leaders is SafeBytes Anti-Malware, the most dependable program for Microsoft Windows. SafeBytes anti-malware is a trustworthy tool that not only secures your PC permanently but is also quite user-friendly for people of all skill levels. Once you’ve got installed this application, SafeByte's sophisticated protection system will ensure that no viruses or malware can seep through your PC.

SafeBytes anti-malware provides an array of enhanced features that sets it aside from all others. Some of them are listed as below:

Real-Time Protection: SafeBytes gives you round-the-clock protection for your PC limiting malware intrusions in real-time. This utility will constantly monitor your computer for suspicious activity and updates itself continuously to keep abreast of the constantly changing threat landscape. Most effective AntiMalware Protection: Built on a greatly acclaimed anti-virus engine, this malware removal application can find and get rid of numerous stubborn malware threats such as browser hijackers, potentially unwanted programs, and ransomware that other common anti-virus applications will miss. Website Filtering: Safebytes allots all websites a unique safety score that helps you to have an idea of whether the webpage you’re just about to visit is safe to browse or known to be a phishing site. Fast Multi-threaded Scanning: Safebytes Anti-Malware, with its advanced scanning engine, offers extremely fast scanning which can promptly target any active online threat. Low CPU/Memory Usage: SafeBytes is well known for its low influence on processing power and great detection rate of various threats. It operates silently and efficiently in the background so you’re free to utilize your PC at full power all of the time. 24/7 Customer Service: For any technical concerns or product assistance, you could get 24/7 professional assistance through chat and email. Put simply, SafeBytes has created a meaningful anti-malware solution that is aimed to protect you against all manner of malware. You now may understand that this particular software does more than just scan and eliminate threats from your PC. So if you’re searching for the absolute best malware removal application out there, and when you don’t mind shelling out a few bucks for it, opt for SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

To eliminate Nectar Toolbar manually, go to the Add or Remove programs list in the Windows Control Panel and choose the program you want to remove. For browser extensions, go to your web browser’s Addon/Extension manager and select the add-on you want to remove or disable. You’ll probably also want to reset your internet browser to its default settings. Finally, check your hard disk for all of the following and clean your computer registry manually to get rid of leftover application entries after uninstallation. But bear in mind, this can be a tough task and only computer professionals can perform safely. In addition, certain malicious programs have the capability to defend against its removal. Completing this task in Safe Mode is suggested.

If you are trying to update or upgrade your Windows 10 computer using the Windows Update and suddenly an “Error 0x800f0900” appears, then you’ve come to the right place as this post will help you resolve this Windows Update issue. When you encounter this error, you will see the following error message on your screen:

“There were problems installing some updates, but we’ll try again later. If you keep seeing this and you want to search the web or contact support for information, this may help: 2018-03 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4088776) – Error 0X800F0900”

This kind of Windows Update error is most likely caused by some corrupted files in the system. It is also possible that the Windows Database might have become corrupted as well. So if you are currently experiencing this problem, refer to the options given below and see which one of them works best for you.

Option 1 – Try running 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 are 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 2 – Try running the System File Checker or SFC scan

The SFC scan or System File Checker is a built-in command utility in Windows that helps in restoring corrupted files as well as missing files that cause several issues in the computer like the Windows Update Error 0x800f0900. It replaces bad and corrupted system files with good system files. 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.

Option 3 – Try running the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update error 0x80073712. 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.

Option 4 – Perform a System Restore

You can also try to perform a System Restore as it can also help you fix the Windows Update Error 0x800f0900. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

Option 5 – Reset both the SoftwareDistribution and Catroot2 folders

You have to stop a couple of services such as BITS, Cryptographic, MSI Installer, and Windows Update Services. And to do that, you need to flush the contents in the SoftwareDistribution folder. The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net start cryptSvc net start bits net start msiserver

• After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
• Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.

After resetting the SoftwareDistribution folder, you need to reset the Catroot2 folder to restart the services you just stopped. To do that, follow these steps:

• Type each one of the following commands.

net start wuauserv net start cryptSvc net start bits net start msiserver

• After that, exit Command Prompt and restart your computer, and then try to run Windows Update once more.

Error C00D11B1- What is it?

Error C00D11B1 is a type of Windows Media Player error code. The error C00D11B1 hampers your ability to play videos, MP3 files and songs on Windows Media Player. The error is displayed in the following format:

Error C00D11B1:’Windows Media Player can’t play the file.’

Solution

Error Causes

The cause of error C00D11B1 message pop up on your computer can be narrowed down to one particular reason virtually because this error may be triggered due to several reasons, these include:

• Corrupt DRM license
• Enabled codec of the video in Windows Media Player codecs section
• Registry Corruption

The good news is that this error is not fatal and does not pose serious PC threats like runtime and BSoD error codes. However, it is still advisable to resolve to ensure you are able to watch movies and listen to songs on Windows Media Player without any difficulty.

Further Information and Manual Repair

Here are some of the best and effective do it yourself methods to resolve the error C00D11B1 on your PC right away:

Method 1- Disable the codec of the video option in the Codecs Section

If you are unable to play downloaded movie files on your PC on Windows Media Player, then try this method to resolve the issue. Simply open Windows Media Player, Go to Tools, Options, DVD and then click Advanced Tab. Here find the codecs section, scroll down to the codec of the video you are trying to play and see if it says enabled. If it does, then disable it and then select a decorder for the codec. Now try running the video again on your Windows Media Player. This will hopefully resolve the issue. Nonetheless if the error still persists, try method 2.

Method 2- Delete DRM Licenses & cache and Download it Again

Sometimes the error C00D11B1 can also be trigged by corrupt DRM licenses & cache. To resolve the issue, simply delete all files. First open Windows Explorer (Windows key + E) and then go to C:ProgramDataMicrosoftWindowsDRM. Now delete all files in this folder. Once deleted, Let Windows Media Player download your license again. After downloading the DRM license again, run the Windows Media Player to see if it works.

Method 3- Disable Firewall Temporarily

Firewall can also be responsible for blocking the Windows Media Player streaming. Firewalls often block important ports that are required in order to run some programs. If this is the cause, then simply disable Firewall temporarily to resolve the issue.

Method 4- Repair the Registry

Registry is that part of your computer that saves all the activities performed on the PC and all the files too including both important and unimportant files like cookies, junk files and bad registry entries. If these unimportant and obsolete files are not removed frequently, the registry gets corrupt and damaged. And due to this reason you may experience error code C00D11B1 on your system. To resolve this issue, simply repair the damaged registry by downloading Restoro. This is a powerful PC Fixer integrated with a registry cleaner. The registry cleaner removes all unnecessary files, cleans and repairs the registry in seconds. Click here to download Restoro and fix error C00D11B1 on your PC right now!

Windows has a lot of built-in tools that help you fix tons of system-related issues. One of them is the System File Check which is the tool you can use to conveniently replace potentially corrupted or missing system files with good ones. But what happens when it does not work? Well, you’ve come to the right place as in this post, you will be guided on how you can replace a corrupted single Windows system file manually with a known good copy of the file if the System File Checker scan is not working. When you encounter this issue with the System File Checker, it will be unable to replace the corrupted system files and returns an error message instead. And so to fix and replace corrupted system files in your Windows 10 computer without the help of System File Checker, you can refer to the instructions provided below. Step 1: First, you need to open the log files listed below and identify which particular file has been corrupted:

• %userprofile%Desktopsfcdetails.txt
• Log %WinDir%LogsCBSCBS.log

Step 2: You will see all the details on the given log files. Once you find out the name and the path of the file, you have to take ownership of this corrupted system file. Step 3: To take ownership of the corrupted file, you need to pull up Command Prompt by tapping Win + R keys on your keyboard and then type “cmd” and tap Enter. Step 4: After opening Command Prompt, type and enter the command below to execute it:

takeown /f FileNameAndPath

Note: In the given command, “FileNameAndPath” represents the name and the path of the corrupted file. For instance, the corrupted file is named “wuapi.dll”, then you need to type “takeown /f C:/Windows/System32/wuapi.dll” Step 5: Next, you need to grant administrators full access & control to the corrupted file and you can do that via Command Prompt again. Step 6: In the elevated Command Prompt, type and enter the following command to execute it:

icacls FileNameAndPath /GRANT ADMINISTRATORS:F

Note: We’re going to use the wuapi.dll again as an example. So the command should be like this: icacls “C:/Windows/System32/wuapi.dll /grant administrators: F”. Step 7: Now all that’s left to do is replace the corrupted system file with a good copy from a trusted source. Once you have a copy, open an elevated Command Prompt again and execute the following command:

copy NewFileLocation FileNameAndPath

Note: In the command given above, the “NewFileLocation” is the location where you have saved the copy of the file. For instance, if you’ve saved it on your desktop, this is how it should look: “copy C:/Users/<username>/Desktop/wuapi.dll C:/windows/system32/wuapi.dll”

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.

Usually when online service is not working or when something goes wrong online it is DNS, well that is what most of the time is the case. And yes, DNS or Domain Name Server seems to be an issue with Facebook being completely down along with Instagram and wassap. The true cause is that there is no working Border Gateway Protocol (BGP) routes into Facebook's sites. BGP is the standardized exterior gateway protocol used to exchange routing and reachability information between the internet top-level autonomous systems (AS). Most people, indeed most network administrators, never need to deal with BGP. Cloudflare VP Dane Knecht was the first to report the underlying BGP problem. This meant, as Kevin Beaumont, former Microsoft's Head of Security Operations Centre, tweeted, "By not having BGP announcements for your DNS name servers, DNS falls apart = nobody can find you on the internet. Same with WhatsApp btw. Facebook has basically de-platformed themselves from their own platform." Many people are very annoyed by this and with the fact that they cannot use their social media platforms but it seems that Facebook employees are in even bigger annoyance as it was reported that Facebook employees can't enter their buildings because their "smart" badges and doors were also disabled by this network failure. If true, Facebook's people literally can't enter the building to fix things. Reddit user u/ramenporn, who claimed to be a Facebook employee working on bringing the social network back from the dead, reported, before he deleted his account and his messages: "DNS for FB services has been affected and this is likely a symptom of the actual issue, and that's that BGP peering with Facebook peering routers has gone down, very likely due to a configuration change that went into effect shortly before the outages happened (started roughly 1540 UTC). There are people now trying to gain access to the peering routers to implement fixes, but the people with physical access is separate from the people with knowledge of how to actually authenticate to the systems and people who know what to actually do, so there is now a logistical challenge with getting all that knowledge unified. Part of this is also due to lower staffing in data centers due to pandemic measures." Ramenporn also stated that it wasn't an attack, but a mistaken configuration change made via a web interface. Both BGP and DNS are down, the "connection to the outside world is down, remote access to those tools don't exist anymore, so the emergency procedure is to gain physical access to the peering routers and do all the configuration locally." Technicians on site don't know how to do that and senior network administrators aren't on site. It seems that it will all be down for a couple of more hours before the issue is resolved.