
Error code 0xc004f050 refers to a problem with activating the Windows key. The problem appears when you try to activate a copy of Windows by using Windows Activation wizard. This happens when the system becomes unstable and critical system files start missing. Though Windows 10 is a free upgrade for Windows 7/Windows 8/Windows 8.1 users, the activation error is still an issue. If you already had Windows 7/Windows 8/Windows 8.1 activated and did an upgrade successfully, then there should be no problem. This Problem Occurs only when you do a clean install.
When you try to activate a copy of Windows Vista or Windows 7 by using the Windows Activation wizard, you receive an error similar to the one below:
An error has occurred
Code:
0xC004F050Description:
The Software Licensing Service reported that the product key is invalid
This error is not something that can be fixed in seconds but will require some time and technical knowledge.
Re-insert the product key by using the Change Product Key tool:
Activate Windows by using the automated telephone system:
If you want to get rid of the old Windows installation folder, then use the Windows Media Creation Tool to create a Flash Drive. Clean Install Windows 10. Now, every time when it asks for a product key, skip it. After installation is complete, Windows will automatically identify and activate your Copy.
NOTE: Clean Install will make Sure you cannot roll back to your previous Windows 7 or Windows 8. So do it only if you are confident of using Windows 10 from here on.
To verify the Windows activation status, follow these steps:
net stop wuauserv net start cryptSvc net start bits net start msiserver
net start wuauserv net start cryptSvc net start bits net start msiserver
“Windows is unable to reach your company’s activation service. Please connect to your corporate network. If you are connected and continue to see the error, contact your system administrator. You can also click on the error detail to find the exact error. Error code: 0xC004F074.” “Activating Windows(R), (Key hash)… Error: 0xC004F074 The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.” “Error 0xC004F074, SL_E_AUTHN_MISMATCHED_KEY, The Software Licensing Service reported that the key is mismatched.”To fix the Windows 10 Activation error 0xC004F078, you have to use the correct key for your type of Windows copy or use Command Prompt to reinstall the key or you could also try running the Activation troubleshooter.