Microsoft 365 Alert – Service Degradation – SharePoint Online – Users may be intermittently unable to access SharePoint Online sites – RESOLVED

Announcements Arpan Das

04/07/2025 08:36:00 AM

NHSmail Reference: INC46571601

Microsoft Reference: SP1108407

Issue Status: RESOLVED

Issue Description: Users may be intermittently unable to access SharePoint Online sites.

More info: Affected users may see a “Something went wrong” error message.

While they focus on remediation, users may be able to circumvent the issue by utilizing InPrivate browsing.

Final Update: 08/07/2025 08:25:00 AM – Microsoft have completed disabling the offending change in the impacted environment and received confirmation from some users who initially reported the issue that the impact is remediated.

Scope of impact: Impact is specific to some users who are located on or served through the affected infrastructure.

Root cause: A change intended to provide updated configurations to our authentication components resulted in the request URL containing too many characters and requests thus failing.

Next steps: Microsoft are further reviewing the offending change to understand what specifically caused the request URL to contain too many characters, and to understand what prevented it from being detected in their update testing and validation procedures, which will allow them to prevent similar issues in future changes.