Some users may be unable to create or publish assignments in Microsoft OneNote

Timeline

Every update Microsoft posted for this issue, newest first.

1. Oct 16, 2026, 19:59 CEST

   We've completed the release of the fix and validated this has remediated impact with internal testing and service telemetry.

2. Oct 14, 2026, 19:43 CEST

   While our fix is continuing to deploy at a rate slower than originally anticipated, we're observing some reduction in the associated errors. However, our analysis of the infrastructure to which the fix has been deployed shows some portions aren't updating as expected, which is preventing the full remediation of the impact. We're analyzing these affected portions of infrastructure to determine whether there are any other actions necessary to totally resolve the issue.

3. Oct 13, 2026, 20:14 CEST

   We’ve begun deploying our fix to the affected environment and anticipate that this process will be complete by our next scheduled update.

4. Oct 13, 2026, 13:08 CEST

   We’ve completed development of the fix and are preparing to deploy it across the affected environment. We’ll monitor service health as the deployment progresses to determine whether it is alleviating impact.

5. Oct 13, 2026, 11:29 CEST

   We’re investigating elevated failures affecting assignment creation in Microsoft OneNote and are monitoring the affected environments to assess the extent of impact. We're developing and testing a fix as part of our mitigation efforts. Once validation is complete, we'll begin deploying the fix across the affected environment to restore service functionality.