Hello niloofaretemadfard,
Sorry for the inconvenience caused by this issue.
According to a description you are facing an issue with error message that prompts you to sign in to OneNote.
For better understanding of this scenario please provide some additional information
- Please share a screenshot of the error message.
- Do you encounter the same issue when sign in to www.onenote.com or OneNote for Windows 10?
- May we know what else troubleshooting steps you tried?
This information will help us to find a proper solution for your concern. Thank you for understanding.
Best Regards,
Igor
Is there anything the end users all having similar issues can further provide beyond what's in this overall thread to help further troubleshoot, get to root cause, and then resolution?