Hi Mike Rohner (mrohner),
Thank you for posting in this community. And I am sorry for this inconvenience caused to you.
In this case, you may kindly try the suggestions in the following article steps by steps:
Reset Microsoft 365 Apps for enterprise activation state - Office | Microsoft Docs
If the above suggestion doesn’t work, please use the Office uninstall support tool to completely uninstall and then reinstall Office.
Download and install or reinstall Microsoft 365 or Office 2019 on a PC or Mac
If the issue persists, may I confirm the following information for a better understanding of your situation?
- The build and version information of your Office? (Open any Office app, for example Word>File>Account.) Could you please share a screenshot on the Product information page and help mask your email address to protect your privacy? Like shown below:
- The build and version information of your Windows? (Click the Start menu > Type “winver” > and hit Enter.)
Best Regards,
May