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

Title: Some users may be unable to access links to other apps provided by Microsoft 365 Copilot Chat prompts User impact: Users may be unable to access links to other apps provided by 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 status: During our internal testing of a new update to increase the number of URLs allowed when routing universal links, we identified that a code error was introduced which results in users being unable to access links to other apps generated by Copilot Chat prompts. We've created and completed validations of a code fix to remediate impact, and we anticipate our code fix reaching all affected users by Wednesday, May 13, 2026. We aim to provide updates on our 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. Start time: Wednesday, April 29, 2026, at 12:00 AM UTC 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