Microsoft 365 Alert – Service Degradation – SharePoint Online – Users may be unable to edit SharePoint Online sites using the SharePoint Designer 2013 tool – RESOLVED

Announcements Shagufta Naaz

11/03/2026 08:28:00 AM

NHSmail Reference: INC46770139

Microsoft Reference: SP1240323

Issue Status: RESOLVED

Issue Description: Users may be unable to edit SharePoint Online sites using the SharePoint Designer 2013 tool.

Final Update: 17/03/2026 08:33:00 AM –Microsoft has completed their deployment to correct the aforementioned configuration issue and confirmed through service health telemetry that the impact is remediated.

Scope of impact: Any user attempting to edit SharePoint Online sites using the SharePoint Designer 2013 tool may be impacted.

Root cause: A recent service configuration change affecting a SharePoint web service endpoint prevents certain web service calls from completing successfully, which is leading to the impact.

Next Steps: Microsoft are reviewing their service configuration change testing and validation procedures to identify and prevent similar issues with web service calls in deployments moving forward.