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: 04/05/2026 09:37:00 AM– Microsoft internal testing of a new update to increase the number of URLs allowed when routing universal links, they identified that a code error was introduced which results in users being unable to access links to other apps generated by Copilot Chat prompts. They have created and completed validations of a code fix to remediate impact, and they anticipate our code fix reaching all affected users by Wednesday, May 13, 2026. They aim to provide updates on their timeline to remediation as the deployment progresses.

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: Thursday, May 07, 2026, at 8:00 PM UTC