Activated Server running Windows Server 2012 R2 after site power outages say to activate windows again

[GuzmanJR]

The server was running fine but after some site electrical outages now says that windows needs to be activated, but when i put in the Key that came with the windows 2012 R2 package it says: "The key didnt work,please check it and try again or try a different key" . none of the CALS works and i have problem with the devices.

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