my copilot app and keyboard extension stopped working two days ago. all its showing is a blank screen

Because the blank screen occurs on multiple devices even after reinstalling, test Copilot in a private browser session with the same account; this distinguishes an account/service issue from an app or device problem without repeating the troubleshooting already attempted.

1. Isolate the account and service

For a personal Copilot account:

1. Open an InPrivate/Incognito browser window.
2. Go to copilot.microsoft.com.
3. Sign in using exactly the same method previously used—Microsoft account, Continue with Google, or Continue with Apple.
4. Note the result:
   • It works: the web experience works in that private session, pointing toward an app, browser-profile, or local configuration issue.
   • It redirects to the updated Copilot experience: the account has moved, or is completing its move, to the updated app.
   • The same blank screen appears: test a different personal account, if available. If another account works on that device, the problem follows the original account and requires Microsoft Support to investigate its backend state.

Microsoft documents this private-session test for personal accounts during the updated Copilot app migration and notes that some functionality can be temporarily unavailable during rollout.^1^

For a work or school account, use the Copilot location provided by your organization instead. Ask the Microsoft 365 administrator or IT help desk to check tenant Service health and, if necessary, open a Microsoft support case.

There is no clearly published public incident currently confirming this exact cross-device blank-screen symptom. Check Microsoft’s public service-health page for changes, but tenant-specific incidents may only be visible to an administrator.^2^

2. Run the connectivity diagnostic

A connection can appear stable while a firewall, DNS filter, VPN, security product, or network policy blocks only Copilot traffic.

1. Open Start, search for Get Help, and launch it.
2. Search for Copilot connectivity troubleshooter.
3. Select Start and complete the checks.
4. Review the results for firewall rules or other connection blockers.^3^

If all affected devices use the same Wi-Fi, VPN, DNS filtering, or security software, repeat the private-browser test on an unrelated network such as a mobile hotspot. This is a new isolation test rather than another app reinstall.

3. Restore the physical Copilot key

The key only launches the configured Copilot experience; it cannot correct an app that already opens to a blank screen. Address the loading problem first.

If the setting exists on your Windows edition and organizational policy permits changing it:

1. Open Settings → Personalization → Text input.
2. Find Customize Copilot key on keyboard.
3. Select Custom, then choose Microsoft Copilot.
4. Press the Copilot key and confirm that it launches the selected app.

The available choices can depend on the account, Windows configuration, and device-management policy.^4^

4. Escalate if the problem follows the account

If the same account produces a blank screen across unrelated devices and networks while another account works, local reinstalls are unlikely to resolve it. Only Microsoft—or the tenant administrator for a work/school account—can inspect the account and service-side state.

• Personal account: open the Windows Get Help app and choose Contact Support. Microsoft’s support guidance directs home users with unresolved Copilot account issues to Support.^5^
• Work/school account: give the results to the Microsoft 365 administrator or IT help desk so they can inspect tenant health and open a Microsoft support case.
• If the app menu works, select … → Send feedback → Report a problem. Include the start date, affected device and operating system, and a screenshot; also add the private-browser, alternate-account, network, and troubleshooter results.^1^
• If the blank screen prevents access to that menu, press Windows+F to open Feedback Hub, or proceed directly through Get Help → Contact Support.^6^

References

1. Troubleshoot Your Content in the Updated Copilot App | Microsoft Support
2. Microsoft service health status
3. Copilot troubleshooters | Microsoft Support
4. Updated Windows and Microsoft Copilot Chat experience
5. I am getting license validation errors with Copilot | Microsoft Support
6. copilot quit, why - Microsoft Q&A