Windows 10: Virus deactivated Windows 11 Pro

We had downloaded a torrent using a vpn, after it was done we switched it off which took an unusually longer time to switch off and boot up. When it booted up, the activate windows watermark was visible and my windows was deactivated. We have a quick heal antivirus subscription which scanned the computer multiple times yesterday with no hints of a virus. This is a prebuilt pc hence we do not have access to the product key, kindly provide us a solution.

:)

 

MSFT acknowledges some Win10 Pro licenses being mistakenly deactivated

Source: Microsoft acknowledges some Windows 10 Pro licenses being mistakenly deactivated - Neowin

More:

• Windows 10 Pro goes Home as Microsoft fires up downgrade server - The Register
• Windows suddenly deactivated - Microsoft Community
• Windows 10 activation bug baffles, angers users | ZDNet

UPDATE: You can now run the Windows Activation troubleshooter to activate again.

*Arrow Use Activation Troubleshooter in Windows 10 | Windows 10 Tutorials

 

MSFT acknowledges some Win10 Pro licenses being mistakenly deactivated

Source: Microsoft acknowledges some Windows 10 Pro licenses being mistakenly deactivated - Neowin

More:

• Windows 10 Pro goes Home as Microsoft fires up downgrade server - The Register
• Windows suddenly deactivated - Microsoft Community
• Windows 10 activation bug baffles, angers users | ZDNet

UPDATE: You can now run the Windows Activation troubleshooter to activate again.

*Arrow Use Activation Troubleshooter in Windows 10 | Windows 10 Tutorials

 

Virus deactivated Windows 10

So, I didn't change hardware, but my Windows pro OS license deactivated. And, I don't have the original key. Is there anything I can do? Other than buying another license? I'm afraid if I buy the license, the virus might just propagate itself right
back on to the machine and deactivate again.