A Microsoft file hosting and synchronization service.
Dear Jcgaylor,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
Per the description shared, I would like to summarize the concern at your end i.e., you are using the OneDrive application on Mac and want to uninstall the OneDrive since you want to continue to use the OneDrive app only in the browser. However, when you try to quit OneDrive, you encounter an error message and when you try to uninstall from the finder, it won't allow you to do it.
If my understanding is correct, I would like you to try unlinking the OneDrive account first and see whether you can uninstall the OneDrive.
Click on the OneDrive in the Apple Menu bar> Help & Settings> Preferences> Account tab> Unlink the account> Restart the Mac> Go to the Finder> Applications> Right-click on Microsoft OneDrive> Move it to the trash bin.
If still not, please launch your Mac in safe mode and see whether you can uninstall the OneDrive app. Reference: Start Mac in the Safe Mode
If you still can't, please share a version of the OneDrive app. Click on the OneDrive in the Apple Menu bar> Help & Settings> Preferences> About tab.
We look forward to your response. Thanks for your cooperation.
Sincerely,
Mia | Microsoft Community Moderator