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M365 Service Health MO1447619
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MO1447619 — Advisory

Users may be unable to sign into the OneNote Web Clipper

Service degradation
Microsoft 365 suite
Administration
Started
04 Aug 2026 22:54 GMT+1
Last Microsoft update
05 Aug 2026 21:38 GMT+1
Data Freshness
Live — 22:24 GMT+1
Impact
Users may be unable to sign into the OneNote Web Clipper.
Incident Timeline
05 Aug 2026 21:38 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We've completed the deployment of our fix to our internal testing environment; however, the fix did not resolve the issue as expected. We've prepared another fix which is being deployed to our testing environment. Once complete, we'll perform validations and confirm if we see impact remediation, after which we'll confirm a timeline for deployment to the affected environment.

Scope of impact: Your organization is affected by this event, and any users attempting to sign into the OneNote Web Clipper are impacted. This information may be updated as our investigation continues.

Root cause: A recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication html, preventing users from signing into the OneNote Web Clipper.

Next update by: Thursday, August 6, 2026, at 6:30 AM UTC

05 Aug 2026 14:55 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We've confirmed that the deployment is progressing as expected and anticipate sharing a completion timeline by our next scheduled update.

Scope of impact: Your organization is affected by this event, and any users attempting to sign into the OneNote Web Clipper are impacted. This information may be updated as our investigation continues.

Root cause: A recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication html, preventing users from signing into the OneNote Web Clipper.

Next update by: Wednesday, August 5, 2026, at 9:30 PM UTC

05 Aug 2026 04:22 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We've identified that the deployment of the fix is taking longer than initially anticipated, but we're monitoring its progress closely to ensure the deployment completes without encountering any complications.

Scope of impact: Your organization is affected by this event, and any users attempting to sign into the OneNote Web Clipper are impacted. This information may be updated as our investigation continues.

Root cause: A recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication html, preventing users from signing into the OneNote Web Clipper.

Next update by: Wednesday, August 5, 2026, at 2:00 PM UTC

05 Aug 2026 01:52 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We've completed creating the code fix, and we've initiated deployment to the imapcted environment. We expect the deployment will be complete and the issue resolved by our next scheduled update.

Scope of impact: Your organization is affected by this event, and any users attempting to sign into the OneNote Web Clipper are impacted. This information may be updated as our investigation continues.

Root cause: A recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication html, preventing users from signing into the OneNote Web Clipper.

Next update by: Wednesday, August 5, 2026, at 3:30 AM UTC

04 Aug 2026 23:32 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We've identified that a recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication HTML, preventing users from signing into the OneNote Web Clipper. We're creating a code fix that will add this authentication HTML back into the service and remediate impact.

Scope of impact: Your organization is affected by this event, and any users attempting to sign into the OneNote Web Clipper is impacted. This information may be updated as our investigation continues.

Root cause: A recent maintenance action meant to remove unneeded code from the service has mistakenly removed the authentication html, preventing users from signing into the OneNote Web Clipper.

Next update by: Wednesday, August 5, 2026, at 1:00 AM UTC

04 Aug 2026 23:09 GMT+1

Title: Users may be unable to sign into the OneNote Web Clipper

User impact: Users may be unable to sign into the OneNote Web Clipper.

More info: Users may receive an error when attempting to sign into the OneNote Web Clipper.

Current status: We're investigating a potential issue with the OneNote Web Clipper and checking for impact to your organization. We'll provide an update within 30 minutes.