Are you facing Windows 10 activation errors after the fresh installation of OS or after the update of the current version such as Windows 7 or Windows 8? The errors can be due to several reasons such as exceeding the limit of usage of product key, DNS issue, networking issue so forth, and so on. If yes, then this article would be helpful as it contains easy and simple fixes for common Windows 10 activation errors.

Before getting into the errors, let us see how to buy Windows 10 Activation Key.

You can buy the 25-digit windows 10 activation key from the Windows Store by following the below steps.

  1. Click on Windows button -> choose Settings -> click on Update & Security -> Activation
  2. Click on Go to Store, and follow the instructions on the screen.

How to resolve Activation Error 0xC004FC03?

This error occurs due to a networking problem. The initial activation will happen only if there is synchronization between your system and the Microsoft server.
Follow the below three steps in order to fix this Activation error

Total Time: 5 minutes

 1.Reconnect to the network by disconnecting once.

After disconnecting from internet ,connect again

2.Run the Network Troubleshooter

find and click on Troubleshoot

3.Turn off the Windows Firewall

Click on Turn off the Windows Firewall

How to resolve Activation Error 0xC004C008?

This error occurs due to the usage of the product key in many PCs or laptops more than the upper limit. This error can be resolved simply by running the Windows Activation troubleshooter.
Follow the below steps to fix this error.
 Click on Start -> Settings -> Update & Security -> Activation -> Troubleshoot

How to resolve Window 10 Activation Errors 0xC004C020?

 This activation error occurs when trying to activate the copy of Windows 10 with a license key. It is the case where the product key is already used on another device.
Follow the below steps to fix this error.
 Click on Start -> Settings -> Update & Security -> Activation -> Troubleshoot

How to resolve Activation Error 0x8004005? – Unspecified error

This activation error occurs due to reasons such as Windows 10 is not legitimate one or the activation is not done properly.

 Follow the below steps to fix this error.

 Click on Start -> Settings -> Update & Security -> Activation -> Troubleshoot

If the above method works on your system, then it is well and good.

But when the above solution fails to activate the Windows, there are other solutions that you should try on a trial and error basis method to fix this annoying error. Since the root cause of this error is not clear, it causes discomfort to the users as applications get stuck and stop working.

There are several reasons behind this unspecified error occurring on Windows 10. Here are some causes of occurrence of this error and the corresponding solutions.

  • Windows Update issues – due to incomplete update 
  • Corrupted temporary files on your system
  • Low disk space
  • Device Drivers problem

Root cause1: Window Update issue

This error can be fixed by running the update troubleshooter. Please follow the below steps

Solution 1: Run the troubleshooter

  • Step 1: Click on Settings -> Update & Security 
  • Step 2: Click on Troubleshoot option available on the left side of the window
  • Step 3: Click on Windows Update -> click on Run the troubleshooter button
  • Step 4: Please wait till the problems are detected and follow the instructions that appear thereafter.

Solution 2: Delete all files from the Windows Update Download folder

  • Step 1: Click on File Explorer -> go to C-Drive –> click on Windows folder
  • Step 2: Click on SoftwareDistribution Folder -> Click on Download folder
  • Step 3: Select all the files and folders in the download folder and right-click on it and click on Delete

Solution 3: Fixing the missing and corrupted files

  • Step 1: Click on Start -> Type cmd -> right-click on it -> ‘Run as administrator
  • Step 2: Type SFC /scannow (Leave a space between SFC and /scannow)
  • Step 3: Please wait till the scanning is complete and restart your system.

Root cause 2: Due to Virtual machine Windows 10 activation errors

Solution: Delete the Registry key

To delete the registry key, follow the below steps

  • Step 1: Click on Windows /Start button and Type run and tap the enter button
  • Step 2: Type Regedit and click on OK Button
  • Step 3: Now check for the presence of Key by navigating to the following path
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\AppCompatFlags\Layers
  • Step 4: If the key is present, delete it.

Root Cause 3: Due to access of Shared Folder/ Drivers

Solution: Modifying the registry value in the Registry editor

Please follow the below steps to modify the registry value for Windows 10 activation errors solution

  • Step 1: Click on Windows /Start button and Type run and tap the enter button
  • Step 2: Type Regedit and click on OK Button
  • Step 3: Now navigate to the path mentioned below
    • HKLM\SOFTWARE\Microsoft\Windows\Currentversion\Policies\System
  • Step 4: If you are using a 32-bit Windows system, then create a new DWORD value naming it LocalAccountTokenFilterPolicy or if you are using a 64-bit Windows system, then create a new QWORD value naming it LocalAccountTokenFilterPolicy.
  • Step 5: Set the value as 1 and click on OK
  • Step 6: Now reboot your system.

Root cause 4: Due to extracting or opening the compressed files like .rar or .zip files

Solution: Re-registration of DLL files

Please follow the below steps to re-register jscript.dll and vbscript.dll files

  • Step 1: Click on Windows /Start button and Type run and tap the enter button
  • Step 2: Type cmd and press Ctrl + Shift + Enter Key together and then click yes on the prompt
  • Step 3: On-Command prompt window, type the following command 
    • regsvr32 jscript.dll
  • Step 4: Type the following command 
    • regsvr32 vbscript.dllStep 5: Restart your system and check whether you can extract the files from a compressed folder 

Root cause 5: Due to Corrupted Temporary files

Solution: Delete corrupted Temporary files

Please follow the below steps to delete corrupted temporary files

  • Step 1: Click on Windows/Start button -> Type Disk Cleanup and click on it
  • Step 2: Ensure the dialog box is C drive and now select the temporary files and other files which you want to delete.
  • Step 3: Click on the Clean-up system files button and click on the OK button

How to resolve Activation Error 0x8007007B?

This error occurs due to a corrupt file system, the error can be fixed by two methods.

  • Step 1: Click on Start -> Type cmd -> right click on it -> ‘Run as administrator’
  • Step 2: Type slmgr – ipk followed by 25 digit alphanumeric code product code. 

Example:  slmgr – ipk xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

How to resolve Activation Error 0x803f7001?

This error is due to the fact that a valid license could not be found to activate Windows.

  • Step 1: Click on Start -> Settings -> Update & Security -> Activation -> Change product key
  • Step 2: Enter 25 digit product key.

These are the commonly occurring errors when installing or upgrading the OS of your system. If you are facing errors other than the above mentioned, do check the article that addresses other errors and their fixes.