Dear @Joshi, Ayush ,
Thank you for posting your question in the Microsoft Q&A forum.
The error you mentioned usually indicates a corruption issue in OneNote, the Office installation, or the local user profile. The Repair Now button inside the pop‑up usually does not fix the issue, so please try the steps below:
1/ Repair Office from Windows Settings
Navigate to Settings on your Windows > Apps > Installed apps
Find Microsoft Office or Microsoft 365 Apps
Select Modify
Choose Online Repair > Repair
Reference: Repair an Office application - Microsoft Support
2/ Clear the OneNote Cache
Open Run (Win + R)
Enter: %localappdata%\Microsoft\OneNote\16.0
Delete the Cache folder
Restart OneNote
3/ Completely Reinstall Office Using SaRA
Download SaRA: https://aka.ms/SaRA-officeUninstall
Run it and choose Office > Uninstall
Restart your PC and reinstall Office
Note: This method cleans up corrupted registry or configuration files that cause OneNote to crash.
If all check has passed but the issue persists, kindly provide more information below to let us work further:
- Does the problem occur with all OneNote notebooks, or only with a specific notebook?
- A screenshot of your OneNote Office version:
- Go to OneNote > File > Account > Product Information
- Please blur or hide any personal or private information before sharing.
- Do other Office applications (such as Word, Excel, or PowerPoint) show similar issues?
- Does the error also appear when you create a brand‑new test notebook?
Note: Please understand that as a forum moderator, my primary goal is to provide helpful guidance and support through general troubleshooting steps. While I don’t have access to internal systems or test devices required to resolve backend/account issues, I truly appreciate your understanding of these limitations. I genuinely hope the information helps you in the right direction, and we are always here to assist as much as I can within our scope.
I hope this information is helpful. Please follow these steps and let me know if it works for you. If anything is unclear, please don’t hesitate to reach out to me.
Thank you for choosing Microsoft, and I am looking forward to your response.
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