Windows 10: Windows Activation Error 0xC0020036

thw windows was preinstalled in my pc and today it suddenly ask me to activate. i was able to use it normally before and i did not have any product key to enter. i've tried to use slmgr but it keeps getting the 0xc0020036 error. could anyone explain it to me?? really urgent as the watermark is incredibly annoying

:)

 

Activate Windows - error code 0xC0020036

@ heleneh, Did you try this? How to Fix Windows 10 Activation Error 0xc0020036 - Appuals.com

 

Windows is not activated - Error 0xC004F012 / 0xc0020036

That something is really messed up....

This is what you should get:

 

Windows is not activated - Error 0xC004F012 / 0xc0020036

Hey all!

So basically, I turned on my PC yesterday as per usual and about half way through using it for the day I noticed a see through "Activate Windows" located on the bottom right, at first I thought maybe it was part of this Wallpaper I recently found online but then noticed it was actually my PC!

I've had Win10 for ages now, so It wasn't a recent activation, I'd say maybe around 2 years or so.

So I went to Settings and came across this.





Then when I clicked Troubleshoot I got this.






I tried doing some research online to see if I could fix it myself but found nothing specifically relevant.

The only thing I can think of that I might have done significantly on my PC is that I recently was changing Modems for my Internet Connection, but then reverted back to my previous one I had for years (because the new one was actually worse somehow), not sure if that will help in anyway.

Thank you! *Smile