Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
For us to assist you better, kindly answer the following questions:
- Are you activating this to computer that has wired or wireless internet connection?
- Can you send us a screenshot of the error message that you're getting whenever you try to activate Office 365?
Meanwhile, please check this article and see what activation prompt are you getting on your computer.
Kindly get back to us with some details.