Microsoft Abandoned Web Import Export OneNote Notebook Features in 2026
Before the Official Announcement
Starting June 21, 2026, when opening the OneNote web page of the OneNote notebook import/export feature https://www.onenote.com/notebooks/exportimport, the following appears:
This page isn't workingwww.onenote.com is currently unable to handle this request.HTTP ERROR 502
A 502 Bad Gateway error means a gateway or proxy server received an invalid response from an upstream server. Causes can include backend service failure, misconfiguration, high load, or network issues.
This indicates that Microsoft had already shut down the gateway for this service function that day.