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

Announcements Arpan Das

20/03/2026 08:40:00 AM

NHSmail Reference: INC46783881

Microsoft Reference: SP1256716

Issue Status: ONGOING

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

Current Update: 27/03/2026 08:48:00 AM– Microsoft has completed development of the code fix and initiated deployment to the affected environments. Based on our current estimates, this deployment is expected to take several weeks to reach full saturation. The provide a more precise timeline for resolution as it becomes available.

Scope of impact: Impact may occur for users attempting to edit SharePoint Online sites using the SharePoint Designer 2013 tool.

Root cause: A recent configuration change is preventing users from being able to edit sites using the SharePoint Online Designer 2013 tool.

Next update by: Wednesday, April 8, 2026, at 8:30 PM UTC