Open copilot.com and sign in with the same account used in the Windows Copilot app; if Copilot works there, repair the Windows app, while failure in both places points to connectivity or account synchronization rather than an app-only problem.
1. Determine whether only the Windows app is affected
- Open copilot.com in a browser.
- Sign in using the same sign-in method and account used previously:
- Personal Microsoft account
- Continue with Google
- Continue with Apple
- Work or school account
- If the page loads, select the sidebar icon in the upper-left. When signed in, conversation history normally appears on the left side in both the web and Windows experiences.^1^
Work and personal account histories remain separate, so use Copilot’s account switcher if both account types are present.^2^
2. If the website works, repair the Windows app
This result means the account and Copilot service are accessible, so recover the local app:
- Open Start > Settings > Apps > Installed apps.
- Find Copilot.
- Select … > Advanced options.
- Select Repair, then reopen Copilot.
- If the screen remains blank, return to the same page and select Reset.^3^
If Advanced options, Repair, or Reset is unavailable, reinstall Copilot:
- Go to Settings > Apps > Installed apps.
- Find Copilot, select … > Uninstall.
- Reinstall Copilot from Microsoft Store.
- Sign in again using the same account.^4^
3. If both the app and website are blank
Run the connectivity diagnostic:
- Open the Windows Get Help app.
- Enter Copilot connectivity troubleshooter in its search box.
- Run the troubleshooter and apply any recommended remedy.
It checks for firewall rules and other blockers that can prevent Copilot from connecting.^5^
4. If Copilot loads but history remains missing
For a personal account, the updated Copilot experience may still be moving chats and content. Microsoft recommends:
- Verify the exact account and sign-in method.
- Close and reopen Copilot.
- Follow any migration message or link displayed in the app.
- Allow time for synchronization and check again later.^6^
Microsoft also requires users affected by this transition to sign in to the updated app by December 31, 2026, to preserve eligible chats and content.^6^
If the interface remains blank after repair/reinstallation and the connectivity test finds nothing, report it from Copilot when accessible through … > Send feedback > Report a problem. Include when it began, the Windows version, whether the website works, and a screenshot.^6^
References
- Conversation history in Microsoft Copilot | Microsoft Support
- Copilot app updates for personal, work, and school accounts
- [Windows 11](https://support.microsoft.com/windows/apps/repair-apps-and-programs-in-windows#summary)
- Welcome to Copilot on Windows
- Copilot troubleshooters | Microsoft Support
- Troubleshoot Your Content in the Updated Copilot App | Microsoft Support