Resolve the 0xE000078B (Server Timeout) error in OneNote

The 0xE000078B error code means OneNote is having trouble communicating with the web server where your notebook is stored. Most likely, there's been a server timeout, which occurs when the server is busy and can't respond to your requests.


If you’re syncing notes to OneDrive, try syncing your notes again in a few minutes. If you suspect a service outage, you can check for more info.


If you’re syncing notes to SharePoint, try syncing your notes again in a few minutes or talk to your server administrator for help resolving this issue.

More help

If you're still seeing this error message after troubleshooting it, please report this issue in the OneNote forums on Microsoft Answers so we can investigate the cause and find a solution.

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