Forum Discussion
Windows 11 Pro OEM product keys not activating
Hello, I recently started having problems with activating new Windows 11 Pro OEM sticker product keys on new equipment. The issues started from yesterday afternoon, a few hours before that anothe...
It sounds like you're experiencing activation issues with your Windows 11 Pro OEM product keys, especially since the problems started suddenly and some keys that previously worked are now failing with errors like 0xC004E028 and 0x8004FE94. Your suspicion about potential problems with the Microsoft activation servers is plausible, especially if multiple devices are affected around the same time.