Hi @Brian Beyer ,
Are you referring to the error message below?
If this is the case, it's because Office 2016 versions earlier than 16.0.4600.1000 aren’t supported now.
For current situation, please follow the instructions in the article below to update Office with Windows updates:
Update Office with Microsoft Update
If you are using Windows 11, go to Settings > Windows Update > Advanced Options, toggle on "Receive updates for other Microsoft products", and then click Check for updates .
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