Hi @Shreklili
Is there any error message?
If so, welcome to share the error message or related screenshots with us for better analysis.
First, please ensure your network connection is OK, you may use mobile hotspot for a check.
Then, I suggest you checkout this article 'Unlicensed Product and activation errors in Office' for troubleshooting.
If nothing works, I will suggest you backup your files and reset your Windows system.
Any updates, please feel free to post back.
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