Hello,
Use the "slmgr.vbs /cpky" command to remove the product key from the registry to protect it from being compromised.
However, publickeytoken="31bf3856ad364e35" doesn't seem to be relevant to this command. This PublicKeyToken is typically related to the signing of .NET assemblies and not to Windows activation or product key management.
https://learn.microsoft.com/en-us/windows-server/get-started/activation-slmgr-vbs-options
Best Regards,
Hania Lian
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