Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users may have been unable to open OneNote pages in Microsoft Teams channels when selecting the OneNote tab – RESOLVED

Announcements Arpan Das

30/06/2025 09:07:00 AM

NHSmail Reference: INC46566905

Microsoft Reference: TM1105530

Issue Status: RESOLVED

Issue Description: Users may have been unable to open OneNote pages in Microsoft Teams channels when selecting the OneNote tab.

More info: To bypass this issue, affected users may have been able to utilize the OneNote app directly or access the content via the file’s direct URL.

Current Update: 30/06/2025 09:07:00 AM – Microsoft have confirmed that the rollback has completed and impact has been remediated as expected.

Scope of impact: Impact was specific to some users who were served through the affected infrastructure.

Root cause: A recent service change introduced a compatibility issue that prevented some users from accessing the OneNote tab in Microsoft Teams.

Next Steps: Microsoft are reviewing their service change procedures to better identify similar issues during their development and testing cycles.