Synching your OneNote notebooks may sometimes fail.
One of the most common issues is when the server is busy.
But OneNote may keep showing the Server is busy error even if the sync process was successful.
So, the error may show up even if the sync was successfully completed.
In this case, it actually indicates an authentication issue rather than a sync problem.
Wait one or two minutes and then sign back in.
Open your notebook and look to see if the server error is gone.
Use OneNote Web Version
Alternatively, verify if the error persists on theweb version of OneNote.
If you manage to sync your notebook using the web version, the issue is half-way solved.
find out if youre still getting the Server is busy error.
Hopefully, the sync process should be successful now.
Some of your background programs might be interfering with OneNote.
Then repair the Office package to confirm your installation files are not corrupted.
Launch theControl Panel, go toPrograms and Features, select Office 365, and then hit theChangebutton.
In the new window, check theQuick repairoption.
reset your system and peek if the server is still busy.
Let us know which method helped you to fix the annoying Server is busy OneNote error.
