Microsoft Copilot shows a blank screen when click open

Reset the Copilot app’s local data instead of reinstalling it again, because reinstalling may leave the app’s existing settings or corrupted data unchanged.

1. Repair, then reset Copilot

1. Close the blank Copilot window.
2. Open Start → Settings → Apps → Installed apps.
3. Find Microsoft Copilot.
4. Select the three dots (…) → Advanced options.
5. Select Repair, wait for it to finish, and open Copilot.
6. If it remains blank, return to the same page and select Reset.
7. Confirm the reset, then reopen Copilot and sign in again.

Reset removes the app’s local data and sign-in state, but it does not remove your Microsoft account. Microsoft documents Repair followed by Reset as the supported Windows app-recovery sequence.^1^

2. Update Windows and Microsoft Store components

If resetting does not resolve it:

1. Go to Settings → Windows Update → Check for updates.
2. Install all available updates and restart Windows.
3. Open Microsoft Store → Library → Get updates.
4. Allow updates for Microsoft Copilot, Microsoft Store, and any related components to finish.
5. Restart Copilot.

These are the documented steps for malfunctioning Microsoft Store applications.^2^

3. Run the Copilot connectivity troubleshooter

A completely white Copilot window can also occur when the app cannot load its online content. Test that separately:

1. Open Start, search for Get Help, and open it.
2. Enter Copilot connectivity troubleshooter in the search box.
3. Start the troubleshooter and apply any recommended changes.
4. Review its results for firewall rules or other connection blockers.
5. Temporarily disconnect any VPN or proxy only if the troubleshooter identifies connectivity as the problem, then test Copilot again.

Microsoft’s Copilot connectivity troubleshooter specifically checks for firewall rules and other blockers.^3^

4. Determine whether the problem is app-only

Open Copilot in a supported browser and sign in with the same account.

• Browser works, Windows app remains blank: the issue is isolated to the installed app or its Windows profile data.
• Browser is also blank or cannot sign in: focus on account authentication, network filtering, proxy, or firewall controls.
• Only one Windows account is affected: test Copilot from a new local Windows user profile. If it works there, the original Windows profile contains the affected app state.

There is no official current incident identified for the exact symptom of the Windows Copilot app opening as a blank white window. A similar Microsoft-hosted report concerns Copilot in a browser and therefore does not establish the cause of this Windows app issue.^4^

5. Escalate with diagnostics

If Copilot remains blank after reset, updates, and the connectivity test:

1. Press Windows key + F to open Feedback Hub.
2. Choose Report a problem.
3. Include:
   • “Microsoft Copilot opens as a completely blank white window.”
   • Your Windows version and OS build from Settings → System → About.
   • Whether Copilot works in a browser.
   • The Copilot connectivity troubleshooter results.
   • The screenshot.
4. Use Recreate my problem if offered, reproduce the blank window, and submit the report.

Avoid another uninstall/reinstall unless Microsoft Store reports a newer Copilot version; that step has already failed to change the behavior.

References

1. Windows 11
2. Windows 11
3. Copilot troubleshooters
4. Microsoft Copilot blank white page when signed in