Fix VIDEO_SCHEDULER_INTERNAL_ERROR

Error code 0xc000021a - What is it?

Error code 0xc000021a occurs when the system is unable to start or there’s a failure in critical system processes. Normally, it would take about several seconds for the system to boot and while on the startup process, error code 0xc000021a may take place to block the system to boot up. Users will get a blue screen of death (BOSD) when this error occurs. When upgrading to Windows 10, be careful; you might encounter other error messages such as error code 8007002c. 

Solution

Error Causes

There are several reasons why error code 0xc000021a occurs. It is important to have a full understanding of what caused the blue screen of death before attempting to fix the error by yourself. See below for a few common causes:

• Computer malware has infiltrated your device.

• Important files such as Winlogon.exe and Csrss.exe are damaged. Winlogon.exe file is responsible for handling the login and logout processes while Csrss.exe is a vital part of Microsoft Client or Server ‘Runtime Server Subsystem’. Once one of these files is damaged or deleted, a stop error will occur.

• When there are mismatched system files installed or system upgrading process failed or still incomplete.

• Premature unloading of Wbemprox.dll

• Newly installed third-party software is not compatible with the operating system.

• There are corrupted, outdated, or incorrectly configured device drivers.

• There’s insufficient space in the system partition. Once the system partition is full, certain errors such as error code 0xc000021a will manifest.

• Windows registry is corrupted or damaged due to a software or system change. This means there are registry entries that are not cleared after uninstalling an application.

Further Information and Manual Repair

In fixing error code 0xc000021a, you might want to try and manually do so. Manual repair methods can give users effective and efficient solutions, addressing the root problems in relation to Windows error codes. Once the manual repair method is correctly implemented, users will be able to resolve issues immediately. However, there might be instances when a Windows professional is needed. In such cases, seek help from a certified Windows expert or you might want to consider using an automated tool whenever necessary.

Method One: Convert the Drive or Partition from NTFS to GPT

In order to fix Error code 0xc000021a in Windows 10, you might need to convert the partition or drive from NTFS to GPT. See below for the procedure: 1. Shut down your device then put in the Windows installation USB key or DVD. 2. Boot your device to the USB key or DVD in UEFI mode. 3. Inside the Windows Setup, open a Command Prompt window by pressing Shift + F10. 4. Type diskpart in the Command Prompt window to open the diskpart tool. 5. Type list disk to identify which drive to reformat. 6. Select which drive to reformat by typing select disk in the command prompt. Afterward, type clean then hit Enter. Once done, type convert gpt to be able to convert the drive from NTFS to GPT. Finally, type exit and press Enter. You can now close the Command Prompt window. 7. Once the partition or drive is converted from NTFS to GPT, the user can now continue the Windows Setup installation. NOTE: Select Custom in choosing which installation type to use. The drive will then appear as a single area of unallocated space. Choose that unallocated space then select Next. At this point, Windows will now begin the installation.

Method Two: Fix System File Errors

There are times when system files get corrupted or damaged which will result in system failure. If this is the case, you can use a Windows free tool to repair corrupted or damaged system files. 1. Right-click on the Start button then selects Command Prompt (Admin) from the list to open a Command Prompt window. 2. Once the Command Prompt appears, type sfc /scannow then hit Enter. Wait until the process completes. If the process is completed and it doesn’t report any error or issues that remain unsolved, you might want to employ the next method.

Method Three: Reset Windows 10

Resetting Windows will delete all software and user accounts installed in the operating system and will reinstall a fresh Windows. 1. Boot your device using a Windows installation USB key or DVD. Select Repair your computer to locate the Troubleshoot option. Afterward, choose Reset this PC. NOTE: If the device is able to boot the system, you can reset Windows without using a Windows installation USB key or DVD. You just have to boot the device then navigate to Settings in the Start button. Choose Update & Recovery then select Recovery found on the left pane. Choose Reset this PC option then select Go back to an earlier build and Advanced startup. Select Get Started button found in the Reset this PC tab. 2. Depending on your device’s condition, you can either select Keep my files or Remove everything. Both options will remove all applications installed in the device and will revert to default settings. 3. Choose either Just remove my files or Remove files and clean the drive depending on the situation. If you choose the Remove files and clean the drive option, the procedure will take longer as it will erase all the files permanently. In this case, deleted files cannot be recovered. However, if you don’t want to remove files permanently, select Just remove my files. 4. Once you’ve decided how to reset your system, click on Next once the Warning screen appears. Afterward, choose Reset once prompted. When the process completed, click on Continue.

Method Four: Download an Automated Tool

Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!

MyWebFace is a browser extension developed by Mindspark. This extension claims to allow users to easily access websites that allow them to make a cartoon portrait of themselves. While this may seem interesting in the beginning, all this extension does is to add links to already popular websites that are easy to find.

When installed MyWebFace changes your default search engine and your home page to MyWay.com.

While the extension is running it gathers user browsing information, allowing it to mine data and better server unwanted ads throughout your browsing sessions. MyWebFace has been marked as a Browser Hijacker by many anti-virus programs, and while not considered malware, it is not recommended to keep it on your computer.

About Browser Hijackers

Browser hijackers (sometimes referred to as hijackware) are a type of malicious software that alters web-browser configurations without the user’s knowledge or consent. These hijacks happen to be rising at a worrying rate worldwide, and it could be really nefarious and sometimes harmful too. Browser hijackers are capable of doing a variety of things on your PC. In general, hijackers are made for the benefit of online hackers often through revenue generation that comes from forced ad clicks and website visits. Although it may seem naive, all browser hijackers are harmful and thus always classified as security risks. Browser hijackers could also let other destructive programs without your knowledge further damage the computer.

Indications of browser hijack

There are numerous signs that indicate the browser is highjacked: 1. the browser’s home page is changed 2. if you enter a URL, you find yourself constantly directed to a different web page than the one you intended 3. the default web engine has been changed and your web browser security settings have been lowered without your knowledge 4. unsolicited new toolbars are added to your web browser 5. you observe numerous ads pop up on the web browsers or computer screen 6. your browser gets sluggish, buggy crashes often 7. you can’t go to certain websites like home pages of anti-malware software.

How does a browser hijacker infect a PC

Browser hijackers can get into a PC in some way or other, for instance via downloads, file sharing, and e-mail also. They also come from add-on applications, also known as browser helper objects (BHO), web browser extensions, or toolbars. Also, some shareware and freeware can put the hijacker within your computer through “bundling”. Typical examples of browser hijackers include Conduit, CoolWebSearch, OneWebSearch, Coupon Server, RocketTab, Snap.do, Delta Search, and Searchult.com. Browser hijacking can cause severe privacy problems and even identity theft, disrupt your browsing experience by taking control over outgoing traffic, substantially slows down your PC by deleting lots of system resources, and lead to system instability at the same time.

Browser Hijacker Malware – Removal

Certain hijackers can be removed simply by uninstalling the corresponding freeware or add-ons from the Add or Remove Programs in the Windows control panel. In some cases, it can be a difficult task to discover and get rid of the malicious piece because the associated file will be running as part of the operating system process. Moreover, manual removal requires you to execute several time-consuming and complex procedures that are tough to conduct for inexperienced computer users. Browser hijackers could be effectively removed by installing the anti-malware application on the affected system. To get rid of any type of browser hijacker from your computer, you could download this particular top-notch malware removal program – SafeBytes Anti-Malware. And use a system optimizer, such as Total System Care, to eliminate all related files from the registry and repair browser issues.

Tips on How to Eliminate a Virus that is Blocking Websites or Preventing Downloads

Malware may cause several different types of damage to PCs, networks, and data. Some malware is meant to restrict or block things that you wish to do on your personal computer. It may well not permit you to download anything from the internet or stop you from accessing some or all sites, in particular the anti-virus sites. If you’re reading this, chances are you’re stuck with a malware infection that is preventing you to download or install the Safebytes Anti-Malware program on your system. Even though this type of problem can be tougher to get around, there are a few actions you can take.

Start Windows in Safe Mode

The Windows OS includes a special mode known as “Safe Mode” where just the bare minimum required programs and services are loaded. In case the virus is set to load immediately when the PC starts, switching to this mode may prevent it from doing so. To start the computer into Safe Mode, press the “F8” key on the keyboard right before the Windows boot screen appears; Or after normal Windows boot up, run MSCONFIG, look over “Safe Boot” under the Boot tab, and click Apply. Once you’re in safe mode, you can attempt to install your antivirus software application without the hindrance of the malicious software. Following installation, run the malware scanner to eliminate standard infections.

Switch over to an alternate internet browser

Some malware only targets certain internet browsers. If this is your case, utilize another web browser as it might circumvent the computer virus. If you suspect that your Internet Explorer has been hijacked by malware or otherwise compromised by hackers, the best course of action is to switch to an alternate browser like Chrome, Firefox, or Safari to download your favorite computer security software – Safebytes Anti-Malware.

Install and run anti-virus from a USB drive

To effectively get rid of the malware, you should approach the problem of running an anti-malware software program on the affected computer from a different angle. To run anti-virus using a USB flash drive, follow these simple steps: 1) Use another virus-free computer system to download Safebytes Anti-Malware. 2) Insert the USB drive into the uninfected PC. 3) Double-click the Setup icon of the anti-malware software package to run the Installation Wizard. 4) When asked, select the location of the USB drive as the place in which you would like to store the software files. Do as instructed on the screen to complete the installation process. 5) Transfer the thumb drive from the clean computer to the infected computer. 6) Double-click the anti-malware software EXE file on the USB flash drive. 7) Click the “Scan Now” button to start the virus scan.

Highlights of SafeBytes Anti-Malware

If you are looking to install an anti-malware program for your PC, there are numerous tools on the market to consider nonetheless, you just cannot trust blindly anyone, irrespective of whether it is a free or paid program. A few of them do a good job in removing threats while some will harm your computer by themselves. You should choose one that is efficient, practical, and has a strong reputation for its malware source protection. On the list of strongly recommended software is SafeBytes Anti-Malware. SafeBytes has a superb history of top-quality service, and customers appear to be very happy with it. SafeBytes anti-malware is a reliable tool that not only secures your PC permanently but is also quite easy to use for people of all ability levels. With its outstanding protection system, this utility will quickly detect and remove the majority of the security threats, including browser hijackers, viruses, adware, ransomware, trojans, worms, and PUPs.

There are many amazing features you will get with this particular security product. Listed below are a few of the great ones:

Antimalware Protection: Using its enhanced and sophisticated algorithm, this malware elimination tool can identify and remove the malware threats hiding in your PC effectively. Real-time Threat Response: Malware programs looking to enter the computer are discovered and stopped as and when detected by the SafeBytes real-time protection shields. This tool will continuously monitor your PC for any suspicious activity and updates itself continuously to keep abreast of the constantly changing threat scenarios. Faster Scanning: This software has one of the fastest and most powerful virus scanning engines in the industry. The scans are extremely accurate and take a little time to complete. Safe Web Browsing: Through its unique safety ranking, SafeBytes notifies you whether a site is safe or not to visit it. This will assure that you’re always certain of your online safety when browsing the net. Minimal CPU Usage: SafeBytes is a lightweight and user-friendly anti-virus and anti-malware solution. As it uses very low computer resources, this program leaves the computer’s power exactly where it belongs: with you actually. 24/7 Guidance: You can obtain absolutely free 24/7 technical assistance from their computer experts on any product queries or PC security issues. To conclude, SafeBytes Anti-Malware is really great for securing your computer against all kinds of malware threats. You now may understand that this particular software does more than just scan and eliminate threats in your PC. You will get the best all-around protection for the money you spend on SafeBytes Anti-Malware subscription, there isn’t any doubt about it.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove MyWebFace without the use of an automated tool, it might be actually possible to do so by removing the program from the Windows Add/Remove Programs menu, or in cases of browser plug-ins, going to the browsers AddOn/Extension manager and removing it. You will likely also want to reset your browser. Lastly, check your hard disk for all of the following and clean your computer registry manually to remove leftover application entries after uninstallation. However, editing the registry can be a difficult job that only advanced users and professionals should try to fix it. Moreover, certain malicious programs are capable to defend against its deletion. You’re advised to do this process in Safe Mode.

In this post, you will be guided on how you can set up the USB tethering feature on your Windows 10 computer and share your mobile device’s mobile data so other devices can also access the internet. Tethering is usually known as Wi-Fi tethering which allows users to share mobile data to any device with Wi-Fi, laptops included. This is really useful especially when you have no other way to access the internet. For instance, if you are using a desktop computer and there is no way for you to connect to the Ethernet, and you have no Wi-Fi adapter that you can use to connect to a router as well, you can use USB tethering instead to access the internet. It is almost similar to Wi-Fi tethering except that it works over a USB connection instead of a Wi-Fi adapter. USB tethering is almost quite the same as an Ethernet connection except that it’s faster compared to Wi-Fi tethering as well as Bluetooth tethering. Just like Wi-Fi tethering, USB tethering is free unless your network carrier has blocked it. Thus, it’s better if you make that clear with your operator. Once you have that covered,

Follow the instructions provided below to set up USB tethering on your Windows 10 computer.

Step 1: First, connect your mobile device to your Windows 10 computer using a USB cable. Step 2: If it asks you to enable the file transfer feature, just cancel it. A prompt that says, “Tethering or Hotspot active—Tap to setup” should be available as soon as you get connected – tap on it. Note: If there is no prompt, just go to Settings > Network and Internet > Hotspot and Tethering and from there, toggle on the USB tethering option. Step 3: Afterwards, the setup will create a new network adapter in Windows 10 automatically and your computer should now be connected to the internet using USB tethering. Note: You have to make sure that the Wi-Fi connection in your mobile device is turned off and if it is connected to an existing network, the USB tethering will be disabled but if you see its status as enabled, then the USB tethering setup is successfully done. In addition, keep in mind that the location of tethering can be different for every phone, especially on a customized operating system such as RealMe, Redmi, Samsung, and any other mobile device although they are clubbed in the section of Mobile and Data Network. In case you encounter some problems when using USB tethering in your Windows 10 computer, there are troubleshooting tips you should follow. The NDIS-based Internet Sharing Device network adapter is what Windows 10 uses to make USB tethering possible so if it stops working, follow the options provided below.

Option 1 – Perform basic check

The first thing you can do if you encounter problems in USB tethering is to do a basic check like checking if Wi-Fi is enabled automatically as well as check if the USB cable is disconnected or if you’ve turned off USB tethering accidentally.

Option 2 – Try installing or updating the USB RNDIS adapter

RNDIS or Remote Network Driver Interface Specification can also help you resolve any USB tethering problem. If the pre-installed driver does not help you in connecting to the internet, then you can try installing the USB RNDIS driver that is, if it’s not installed yet. If it is already installed, you can try to update it instead.

• Tap the Win + R keys to open Run and type “devmgmt.msc” in the field and hit Enter to open the Device Manager.
• Next, expand the Network adapters section and look for the Remote NDIS based Internet Sharing Device. But if you are using a Samsung smartphone, you might see “Samsung” instead of under Network adapters.
• Right-click on it and then select the “Update driver” option.
• Then select the “Browse my computer for driver software” option.
• After that, select the “Let me pick from a list of available drivers on my computer” option.
• Now uncheck the checkbox for “Show compatible hardware”.
• From the given list on your left-hand side, look for Microsoft and then select the Remote NDIS based Internet Sharing Device on your right-hand side.
• Click on Next. A new popup will appear where you have to click on Yes. This will install the driver.
• Now click on the Close button and restart your computer.

What is the Runtime Error R6025?

The runtime error R6025 can be quite annoying for PC users as it pops up randomly anytime. It is a type of runtime error but typically associated with C++ programming. The error is displayed in the following format:

‘Runtime Error! Program: C:…R6025-Pure Virtual Function Call’

Solution

Error Causes

The runtime error R6025 is triggered due to the following reasons:

• Runtime components of Visual C++ libraries are missing
• Microsoft.NET framework damaged
• Registry corrupted with bad files and data overload
• Virus and malware invasion

Further Information and Manual Repair

Try the solutions given below to repair the runtime error R6025 on your system:

Cause: Microsoft.NET framework damaged

Solution: If this is the underlying cause of the error, then it is advisable to reinstall and repair the Microsoft.NET framework on your PC. To reinstall this framework, go to the start menu, click control panel, programs and then click ‘Turn Windows features on or off’. Here you might be promoted for an administrator password. Insert the password to proceed. Now locate Microsoft.NET framework 3.5.1 and uncheck this box, press OK and then reboot your system. After that open ‘Turn Windows features on or off’ and check the Microsoft.NET framework 3.5.1 and then restart your PC. This will hopefully resolve the error.

Cause: Runtime components of Visual C++ libraries are missing

Solution: If runtime components of Visual C++ libraries are missing, then you will have to download and install these from different websites. This can be time-consuming and slightly complicated for you if you are not technically sound.

Cause: Malware Attack

Solution: If the runtime error R6025 is triggered due to a malware attack, then you will have to install and run a powerful antivirus on your PC. This will help detect and remove such malicious software affecting your system.

Cause: Registry Issues

Solution: If registry corruption is the underlying cause of the runtime error R6025 on your PC, then you need to clean up the registry and repair it. The best way to clean and repair the registry is to download Restoro. Restoro is an advanced PC repair tool integrated with powerful and highly functional utilities all in one. Utilities include a registry cleaner and a system optimizer. It has easy navigation, a user-friendly interface, and is compatible with all Windows versions. Users of all levels can operate it to resolve all kinds of PC errors including the runtime error R6025. The registry cleaner utility wipes out all the unnecessary, malicious, obsolete files and invalid entries overloading the RAM. It frees up the disk space, repairs the damaged files and the registry. Furthermore, Restoro also functions as a system optimizer. It detects system instability issues and resolves them while boosting the speed of your PC. To resolve the runtime Error R6025 on your system in seconds click here to download Restoro PC repair tool now!

What is QTCF.dll Error?

Sometimes you may experience QTCF.dll error on your computer either during installation or while upgrading applications like iTunes and QuickTime. This error indicates that the installation or the upgrading of the desired application was unsuccessful. The QTCF.dll error is recognized by the Apple Support Community and they have provided a solution to fix this error easily.

Solution

Error Causes

QTCF.dll error occurs because the computer overloads with too much data which corrupts and damages registry files. And therefore the desired program fails to download and start on your PC. When this happens you see a pop up on your screen and the QTCF.dll error message that is usually displayed as:

• QTCF.dll not found
• QTCF.dll file is missing

Such message display hinders your ability to use iTunes or QuickTime applications on your PC. Furthermore, it also slows the performance of your system and you may encounter startup and shutdown problems. Therefore, it is advisable to repair the problem and fix the QTCF.dll error right away.

Further Information and Manual Repair

The good news is that you don’t need to go to a professional or be an IT expert in order to fix the QTCF.dll error. Since this error means that the installation or the attempt to upgrade the system was unsuccessful therefore you need to reinstall the fresh copy of the application. Here’s how you can easily fix the problem by yourself and install a fresh copy of the application: Step 1: First close all the applications running on your computer. Step 2: Now uninstall the application that you were trying to install such as iTunes or QuickTime.  To do this, go to the start menu, click on settings, control panel, and programs. Now click on the application you want to remove. Step 3: Once the application is uninstalled and removed from your computer, then restart it again. Step 4: Now download a fresh version of the application (iTunes or QuickTime) from Apple’s official website http://www.apple.com/quicktime/download/. Step 5: Run the installer. If reinstalling doesn’t work, then it is advisable to download the QTCF.dll repair tool. This repair tool will scan your PC for errors in seconds. Once the scanning is complete, click on the ‘fix all’ button to repair your computer. Once the error is fixed, restart your computer and then try reinstalling the desired application one more time.

A Word of Advice

For regular PC users, it is advisable to install an anti-virus and malware scanner and run it every time you use your computer. This helps you keep informed about the viruses or errors that your computer might be exposed to. And you can take timely actions before you experience file corruption and damage.

Many times we were talking and writing here on Errortools.com about security, privacy, hacking, identity theft, etc. We tried to raise important security questions and I hope I have managed to at least shed some light and change maybe some bad behaviors for some, helping them embrace better routines about their security on their PC. In this light, I will today present you with one neat and awesome piece of software, a password manager worth your time and money (if you want premium features): BitWarden.

What BitWarden offers?

The first thing that it offers is the completely free basic plan, granted BitWarden is not an open-source project nor completely free but it has an unlimited free basic plan that will cover 90% of user needs. There is also a free basic unlimited plan for Organizations letting you and one more user share files and other stuff via BitWarden making it a cool option if you need it. Premium features offer you encrypted sharing of files, two-step login, 1GB file attachments (encrypted), Bitwarden Authenticator (TOTP), Vault Health Reports, Emergency Access, and Priority Support. The cost for all of these additional features is 10 USD per year for an individual plan or 40 USD per year for organizations where you will get an increase of maximum users from 2 to 6. Yes, you read that correctly, only 10 USD per YEAR for the whole set of features. Granted if you do not need any of them, enjoy the free version forever. Besides very low premium cost BitWarden will offer you compatibility with all major browsers and devices including both Android and iOS platforms making it a great cross-platform solution to login and maintain your passwords anywhere with just one click. Once installed all you need to do is set one master password and be very careful not to lose or forget this one, if you do all of your other generated passwords will be lost forever.

Features

Secure Password Sharing

Share your encrypted data quickly and easily, and only with the users or teams who need access

Cross-Platform Accessibility

Access critical data in your Bitwarden vault from any location, browser, and device

Cloud-Based or Self-Host

Get up and running in minutes in the cloud or you can self-host Bitwarden for complete data control

Security Audit & Compliance

Open source and third-party audited, Bitwarden complies with Privacy Shield, GDPR, CCPA regulations

Vault Health Reports

Access insightful reports to reveal weak, reused passwords, and other helpful data security metrics

Directory Sync

Our powerful Directory Connector streamlines user and group onboarding and keeps them in sync

Always-On Support

Our Customer Success agents are available to support you around the clock

Detailed Event Logs

Bitwarden creates audit trails to help you keep track of user and group access to sensitive data

Flexible Integrations

Unite your existing systems with Bitwarden using SSO authentication, Directory services, or powerful APIs

Conclusion

There are many password managers out there but via recommendation I have tried BitWarden and truth to be told, I really never felt the need to try anything else, it is great at what it does and it is moving forward with features and it is constantly updated and maintained.

Something we are used to doing in a certain way inside Windows 10 is slightly changed in Windows 11. One of those things is how you open task manager, well kind of. Option to right-click on the taskbar and launch task manager is gone but do not worry there are other same and simple ways you can launch it.

1. Press CTRL + SHIFT + ESC or CTRL + ALT + DEL
2. Right-click on the START button
3. Type task manager in start search on top in the start menu
4. Type taskmgr in command prompt
5. Press ⊞ WINDOWS + R to open run dialog and type in taskmgr

And that’s it, now depending on your situation, you might use different methods to evoke task manager.

Windows 11 has some cool animations including fading effects which make working in it feels nice and futuristic but the cost of this is that there is a slight delay to certain actions performed. If you want the snap fast feature in Windows 11 and do not care about this eye candy there is an easy way to turn animations off inside it.

• First, open Windows Settings by pressing ⊞ Windows + I on your keyboard
• Alternatively, click on Start, search for Settings, and then click its icon.
• When Settings appears, look in the sidebar and select Accessibility.
• In Accessibility settings, click on Visual Effects.
• In Visual Effects, switch Animation Effects to Off.

That’s it, changes will be applied automatically, you can close settings and continue working inside Windows 11 without animations and fades. You can always switch animations back On via settings if you change your mind.

Most scrollbars are hidden by default if they are not used in Windows 11. If you are not ok with this feature and want scrollbars to be always visible and available do not worry, turning them ON is very easy.

• Press ⊞ WINDOWS + I to open Windows settings
• Click on Accessibility in the sidebar
• Select Visual Effects
• Inside visual effects settings find Always show scrollbars and switch it ON

Windows 11 will save settings automatically and apply setting right away. Close settings and continue with work.

Error Code 0x8007007B (Code 0x8007007B) – What is it?

Error code 0x8007007B (Code 0x8007007B) is an error that occurs when you attempt to activate Windows 10, as well as Windows Server 2008, Windows Vista, Windows 7, Windows 8, or Windows Server 2012.

Common symptoms include:

• You will see an error message like this: “Error 0x8007007B 'The filename, directory name, or volume label syntax is incorrect”.
• If you are using volume-licensed media to install: Windows 7, Windows 8, Windows Vista Business, Windows Vista Enterprise, Windows Server 2008 R2, Windows Server 2008, Windows Server 2012, Windows 10.
• Your computer is not connecting the activation wizard to a Key Management Service (KMS) host computer.

Solution

Further Information and Manual Repair

Error Code 0x8007007B usually occurs when a product key has been activated too many times. Blocking activation aids in avoiding abuse of the key. If abuse of the key is not the case, it is possible to get the key reset, or you may receive a new key altogether. When you are not sure that you can complete these methods yourself, as they do contain advanced steps, it would be wise to consult a computer repair technician to avoid making the problem any worse.

Generally, the solution can be simple; it is just dependent on how comfortable you are with getting technical in your computer. Volume licensed media means that the media has a preset number of times that it is allowed to be activated. This helps to avoid misuse of the product. Some people install the Windows 10 program multiple times on their computer if they are software developers or do certain types of software testing. It is important to know the cause in order to effectively find the solution.

Method One:

1. From the desktop screen, press the Windows key and S, type “Command Prompt”. Then, right-click on Command Prompt in the results. Select Run as Administrator.  Click Yes when asked about requesting permission.
2. In the Command Prompt box, enter the command: slmgr.vbs -ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
3. The x's represent the product key. Replace these with your unique product key.
4. Type in the following command into the “Command Prompt” window: slmgr.vbs -ato
5. Click Enter
6. Restart your computer and try to activate windows again. It should not show the error code anymore.

Method Two:

1. While on the desktop, press the Windows key and R.
2. A window saying Run should open.
3. Type in the following command: Slui 3
4. Press ENTER and a window should appear.
5. This window asks for you to enter the operating system activation product key.
6. Enter this key in the space provided.
7. After entering this, click Activate.
8. Restart your computer now.
9. Check for activation. The Error code should be gone now.

Method Three:

1. Open the Command Prompt with access as administrator just as in Method One, and enter the following command: sfc /scannow
2. The command will complete the tasks. This will take some time so just let the computer do its thing and work. Let the sfc finish the scan.
3. When the scan is complete, restart the computer.
4. Check for the activation. The error code should be gone at this point.
5. If it is gone, revisit Method One or move on the Method Four.

Method Four:

Call the Microsoft Support Team and explain the problem in as much detail as you can give. Give the team the error code 0x8007007B and ask to have a different product key. When they give you the new product key, repeat Method 2. The Microsoft Support Team will either change your product key, or they will reset your current product key so that it can be used for activation again.