Hi @KendallKhan
There's an existing solution from this existing post for those on Mac: https://learn.microsoft.com/en-us/answers/questions/5386919/0x0-error
If your own Windows, log in into https://account.microsoft.com/services and make sure your subscriptions shows as Active.
Did you install office via your Microsoft account or by something else?
You can try repairing Microsoft 365, go to Control Panel > Programs > Microsoft 365 > Change > Online repair
Or you can try troubleshooting by pressing Win + S, search Get Help, type something like “Office subscription not recognized, error 0x0”, it should run automatic diagnostics.
Hope this helps!
Best regards,
Nanta