Windows 10: Error 0x800f0805 on Activation

I tried to activate Windows on my laptop and upgrade it to Windows 10 Education with a product key from my school. When it was updating, my laptop crashed and restarted. I tried to put the key again, it says "The product key you entered didn't work. Check the product key and try again, or enter a different one. Error Code:0x800f0805"

How do I fix this?

:)

 

Windows Update problem after disc change - Error 0x800f0805

Hello,

Thank you for the reply. I include my feedback on the issue:

I performed a clean boot according to the steps. On this boot I tried,

• Updating through Windows Update (threw error 0x800f0805)
• Updating through Windows 10 Update Assistant as the link suggested (threw error 0x8007001f).

 

Error Code: 0x800f0805, Windows 10 Home, Version 1607

Hello Jay,



This issue might be caused by corrupted system files. We want to know what happened on the resolution that was provided by
David Haz? Have you tried performing the troubleshooting steps that he suggested? Also, we want to know if you’re still getting the error message 0x800f0805?



We’ll be waiting for your reply.

 

Error 0x800f0805

I'm trying to update the computer but every time i press retry this message pops up":

• 2018-04 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4093112) - Error 0x800f0805"