TL DR: It's almost certainly from Microsoft, but they should sign it again. Click the OK button when Command completed. To do this, first, you need to open Command Prompt with admin privilege.Click on the start menu-> right click on the Command Prompt and then select Run as Administrator Now, type slmgr -rearm command in the command prompt and hit Enter key to run this command.

If the key was compromised and used to sign something evil before February 17, the expiration date wouldn't save you. Fix 1: Your Windows license will expire soon Via Manual Reactivation. Unless Microsoft's private key was compromised between February 17 and now, the expiration date doesn't matter. It also means that if the key is compromised and it can't be revoked, it will eventually expire on its own. THANK YOU I had a similar issue to the OP - Windows started spontaneously claiming key was expiring - and when trying to get my key using ProduKey, it was giving me one that said OEM BIOS Boot and one that said Win 10 Pro, which I was trying to use (unsuccessfully). The file hasn't been modified to break the SHA256 signature, it's just time for them to switch keys, so Microsoft doesn't have to hang onto and protect old keys forever. The OS features an all-new simplified, yet modernized, interface and was designed to inspire productivity and creativity. inserting malware into it would break the signature) Signatures don't prove whether a program is safe, just that it hasn't been modified since it was signed.Īlthough the SHA256 signature has expired, this doesn't necessarily mean that the signature can no longer be trusted, so long as Microsoft has kept that private key safe. Microsoft Windows 11 Home OEM CD-KEY GLOBAL Windows 11 is Microsofts newest major release of its operating system and the successor to Windows 10.

This is caused by an issue with a Microsoft digital certificate, which expired October 31, 2021.

What a signature means: The signature means that the program hasn't been tampered with after being signed. Microsoft detailed the issue in the following Windows 11 known issues and notifications page: Starting on November 1, 2021, some users might be unable to open or use certain built-in Windows apps or parts of some built-in apps.

Microsoft windows key expired