A Microsoft file hosting and synchronization service.
Dear JAPartridge
Thanks for raising your concerns in Microsoft Community.
Based on your description, I understand that you accidentally set the opening settings for documents in OneDrive and need to clear these default settings. I understand your feelings and this problem is indeed troubling.
We can undo the settings for opening files by restoring the default settings of the OneDrive app:
-> Reset OneDrive
- First, completely shut down OneDrive, and you need to shut down background programs as well;
- Open the device's [Settings]. Find the application list or the application settings list.
- In the list, find and click OneDrive. In the application's information interface, check if there is an option for [Manage] or [Storage];
- In the options, Click [Clear Data]. This option will clear the settings in all apps.
- After completion, exit [Settings]. Reopen OneDrive and see how it works.
You can then open any document and check if there is an option to [Open in other apps] at the bottom of the interface.
And please confirm whether Microsoft 365 copilot or a separate Office app is installed on your device to ensure that the Office document can recognize the installed apps on the device.
If resetting OneDrive doesn't work, I recommend uninstalling and reinstalling OneDrive to allow OneDrive to re-establish interaction with other apps on the device.
I hope the above information is helpful to you. We are looking forward to hearing from you and will continue to assist you.
Best Regards,
Tracy - MSFT | Microsoft Community Support Specialist