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Dear @John Brown,
Welcome to Microsoft Q&A Forum!
Thank you for bringing this to our attention. I completely understand how frustrating it must be to see the “Back up this document to OneDrive” banner repeatedly, especially when your files are already syncing with OneDrive. I truly empathize with the disruption this causes to your workflow.
After thoroughly reviewing the issue and consulting available resources, I honestly confirm that Microsoft has not yet provided a permanent way to disable this banner across all Office applications. While there are a few temporary workarounds (such as dismissing the banner or adjusting certain settings), these do not offer a lasting solution, particularly for users like yourself who already rely on OneDrive for file synchronization. I still choose to tell you the truth of the situation and sincerely apologize for this unexpected limitation of the feature.
I understand how important it is to have a clean, distraction-free workspace, and I agree that enhancements like this should always come with an option to opt out permanently. Your feedback is incredibly valuable, not just to us, but to Microsoft as well.
Therefore, I strongly encourage submitting feedback directly to Microsoft through the “Help > Feedback” option in any Office app or you can use submit in Microsoft Feedback Portal. This feedback goes directly to the product team and helps prioritize future updates. The more users who voice this concern, the more likely it is to be addressed in a future release.
Also, I will note this internally through our available channels to try that if your voice is heard. And if I have a chance to have your contribution to our community, this action can spread out your idea in this forum so that others can consult and submit more feedback to Microsoft by your case.
I truly appreciate your patience and understanding as we work within the current limitations. Wish you a pleasant day!
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