Windows 10: My windows 11 pro suddenly said its not activated and activate windows is written on my screen.

I tried troubleshooting, searched in internet but nothing worked. I have windows 11 pro and where i built my pc they activated and it was perfectly fine.

:)

 

Windows 8.1 pro + WMC key activation

I was considering buying a WMC pro add on for my windows 8.1 pro install, but have googled and found some people had trouble activating it. Has anyone on here got any experience with this.

As to my install, I have a real Windows 8 pro key. So I installed windows 8 pro using a MSDN retail .iso which was activated soon as it finished installing , then I updated to .1 pro.

When you buy the WMC add on, it changes your key, I have read some people have had trouble activating it, now mine activates from windows, I hate doing the phone activation crap, so I don't want to have to do that after the WMC add on finishes installing.

The question is, what happens to my windows 8 pro key, is it still usable? and how would i go about if I had to reinstall? would it have to be-

Install win 8 pro-update to 8.1-install WMC add on, or could i use a windows 8.1 pro with WMC disc?

Thanks guys

Tigger

 

My previously activated windows 11 pro suddenly no longer activated.

My previously activated windows 11 pro suddenly no longer activated.

Activation Error code: 0xC004F211

There have been no changes in my system.

Seems to be after:

2022-11 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5019980)

 

Windows 8.1 pro + WMC key activation

This worked for me last time with a Win 8 key.

Install Windows 8.1 and enter KMS key during setup. Once in windows change product key to my Windows 8 key. Go to add features and enter my WMC add-on key. Drink a beer to a job well done.