Microsoft 365 Alert – Service Degradation – Microsoft 365 Copilot Chat – Some users may be unable to access links to other apps provided by Microsoft 365 Copilot Chat prompts – ONGOING

05/05/2026 08:46:00 AM

NHSmail Reference: INC46816658

Microsoft Reference: CW1300750

Issue Status: ONGOING 

Issue Description: Some users may be unable to access links to other apps provided by Microsoft 365 Copilot Chat prompts.

More info: Users may receive an error or be directed to a page that never loads when clicking links to other apps provided by Copilot Chat prompts.

This issue impacts any service where Copilot Chat can be utilized, which includes but may not be limited to the following:
• Microsoft Teams
• Word
• Excel
• PowerPoint
• Outlook
• OneNote

Current Update: 08/05/2026 09:37:00 AM– Microsoft’s deployment of a code fix to address a code error causing users to be unable to access links to other apps provided by Copilot Chat prompts is at 10 percent saturation but progressing slower than initially anticipated. At the current rate, they believe full saturation will occur by Sunday, May 17, 2026, and they are determining what actions they can take to expedite they deployment to affected users.

Scope of impact: This issue impacts users attempting to click or access app links provided by Copilot Chat prompts who may not be redirected as expected. This section may be updated as the investigation progresses.

Next steps: A new update to increase the number of URLs allowed when routing universal links has introduced a code error, which results in users being unable to access app links provided by Copilot Chat prompts.

Next update by: Wednesday, May 13, 2026, at 8:00 PM UTC