That message matches a known Copilot temporary failure state where the service can’t process the request at that moment.
Try these steps:
- Rephrase the prompt and send it again. A generic service error can sometimes clear on retry.
- Wait a short time and try again later. This message can appear when Copilot is temporarily at capacity or when an unexpected backend error occurred.
- If using Copilot on the web, refresh the browser page.
- Check browser cookie settings if this is happening in web apps:
- In Chrome: Settings > Privacy and security > ensure Allow third-party cookies is selected.
- In Firefox: Settings > Privacy & Security > Enhanced Tracking Protection = Custom, and ensure Cookies is unchecked.
- In Safari on macOS: Safari > Settings > Privacy and ensure Prevent cross-site tracking is unchecked; then in Advanced > Privacy, ensure Allow-privacy-preserving measurement of ad effectiveness and Block all cookies are unchecked.
- If using the updated Copilot app with a personal account, quit and reopen the app. On the web, refresh the page.
- Confirm the correct account is signed in. Personal and work or school accounts remain separate, and the account switcher can be used to verify the active account.
- If the issue continues in the updated Copilot app, report it from the app:
- Select the ellipsis (…) in the upper-right corner.
- Select Send feedback.
- Select Report a problem.
- Include when the problem started, device and operating system, and a screenshot.
- If the problem is specifically a Microsoft 365 Copilot license validation issue in web apps, enable third-party cookies. For home users, contact Support if the error continues. For business users, the Microsoft 365 admin should verify Copilot entitlement and contact Microsoft support if needed.