Windows Copilot is a standalone app in Windows 11. If it is missing, will not open, shows a blank window, rejects your sign-in, or opens only a small quick view, first check that the app is installed and use a personal Microsoft Account; then try the app and Windows repair steps below.
Work through these fixes in order and stop when Copilot works again. Later steps affect more of Windows, so reserve them for persistent or system-wide problems.
1. Check whether Copilot is installed
The current Windows Copilot experience is an installed app, not a permanently built-in Windows sidebar.
- Open Start > Settings > Apps > Installed apps.
- Search for Copilot.
- If it appears, launch it from Start or continue with the repair steps below.
- If it does not appear, open the Microsoft Store, search for Copilot, and install it.
On new Windows 11 PCs, Copilot may already be installed and pinned to the taskbar or listed in Start. If it is absent from Installed apps, install it from the Microsoft Store.
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2. Check the account you are using
The Windows Copilot app requires a personal Microsoft Account. A work or school account is not a supported sign-in method for this app. Microsoft 365 Copilot is a separate product with different account requirements.
If Copilot refuses to sign in:
- Open Copilot from Start.
- Sign out if an account is already shown.
- Sign in with a personal Microsoft Account.
- Close and reopen Copilot.
3. Restart Copilot and Windows
A stuck Copilot process can make the app appear to do nothing or leave a blank window on screen.
- Close the Copilot window.
- Restart Windows from Start > Power > Restart.
- Open Copilot again from Start.
4. Repair the Copilot app
Windows 11 can repair some apps without deleting their data. Try Repair before Reset.
- Open Start > Settings > Apps > Installed apps.
- Search for Copilot.
- Select the … (More options) button beside Copilot.
- Select Advanced options.
- Select Repair.
- When the process finishes, launch Copilot again.
Repair may be missing on some installations. Microsoft does not expose Advanced options, Repair, or Reset for every app.
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5. Reset Copilot if Repair did not help
Reset removes the app’s local data and returns its settings to their defaults. You may need to sign in again.
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- Return to Start > Settings > Apps > Installed apps.
- Select … > Advanced options next to Copilot.
- Select Reset.
- Open Copilot and sign in again with your personal Microsoft Account.
If Advanced options or Reset is not present, skip this step. The option is unavailable for some app installations.
6. Change the Copilot shortcut if it opens the wrong window
On supported keyboards, the Copilot key launches Copilot. You can also press Windows key + C. Depending on the configured shortcut behavior, either shortcut can open the full app or a smaller quick view.
- Open the Copilot app.
- Select Account > Settings.
- Find Copilot Keyboard Shortcuts.
- Change the shortcut behavior from quick view to the full application, if that is the option you want.
If the app opens normally from Start but not from a keyboard shortcut, the installation is probably working. Check the shortcut configuration or keyboard hardware.
7. Update Windows 11 and the Copilot app
Compatibility fixes for Windows apps may be delivered through Windows Update and the Microsoft Store.
Install Windows updates
- Open Start > Settings > Windows Update.
- Select Check for updates.
- Install available updates.
- Restart when Windows asks you to.
Update Copilot from the Microsoft Store
- Open the Microsoft Store.
- Select Library.
- Select Get updates.
- Wait for Copilot and other Store apps to finish updating.
Windows Update can fail because of corrupted update files or cache data, incomplete downloads, low disk space, incompatible drivers, permission problems, or third-party security software. These causes are worth investigating if Copilot broke after an interrupted update.
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8. Run the Windows Update troubleshooter in Get Help
Microsoft’s current automated troubleshooters are integrated into the Get Help app. The older Microsoft Support and Recovery Assistant has been replaced. Get Help also includes Copilot troubleshooters.
- Open Start > Settings > System > Troubleshoot > Other troubleshooters.
- Find Windows Update.
- Select Run.
- Follow the instructions in Get Help.
The available Copilot troubleshooters and their tests may change as Microsoft updates Get Help.
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Use a clean reinstall when Repair and Reset do not resolve crashes, blank windows, or failed launches.
- Open Start > Settings > Apps > Installed apps.
- Search for Copilot.
- Select … (More options) beside it.
- Select Uninstall and confirm.
- Restart Windows.
- Open the Microsoft Store, search for Copilot, and install it again.
- Launch Copilot and sign in with your personal Microsoft Account.
If Copilot is not listed in Installed apps, install it directly from the Microsoft Store.
10. Repair damaged Windows system files
Use these commands when Copilot problems appear alongside failed updates, broken Windows components, unexplained app crashes, or other system errors. Run DISM first, then System File Checker.
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- Search Windows for command prompt.
- Right-click Command Prompt and select Run as administrator.
- Approve the User Account Control prompt.
- Run DISM.exe /Online /Cleanup-image /Restorehealth and wait for it to complete successfully.
- Run sfc /scannow and wait until verification reaches 100%.
- Close Command Prompt, restart Windows, and test Copilot again.
11. Check the disk if Windows reports storage errors
A damaged file system can prevent updates and apps from working correctly. In an elevated Command Prompt, run chkdsk /f C:. Windows may tell you that the drive is in use and ask to schedule the check for the next restart. Type Y, press Enter, and restart the PC. Allow the disk check to finish before testing Copilot.
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Windows 11 has a repair-reinstall option that keeps your apps, files, and settings while reinstalling the same Windows version.
- Open Start > Settings > System > Recovery.
- Under Fix problems using Windows Update, select Reinstall now.
- Choose whether Windows may restart automatically 15 minutes after installation.
- Select OK and let the repair finish.
This option may be missing on a work- or school-managed PC. It is also unavailable on Windows 11 versions earlier than the 2022 annual update or on systems without the February 2024 optional update or a later update. Update-management controls and policies, including WSUS-related policy, feature-update or quality-update deferral, target-release-version policy, or “Remove access to use all Windows Update features,” can also make it unavailable.
If the option is missing on a managed computer, contact the administrator rather than changing update policies yourself.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What PC insights can and cannot do
Some Copilot installations include PC insights, which can explain device information and guide you toward troubleshooting steps. It is gradually rolling out and may not be available on every PC.
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PC insights cannot make Windows changes, run troubleshooting automatically, or repair the system on your behalf. You still need to perform the steps it recommends.
Which fix should you try first?
| Symptom | Best first action |
|---|---|
| Copilot is missing from Start and Installed apps | Install it from the Microsoft Store |
| Copilot opens, but sign-in fails | Use a personal Microsoft Account |
| Copilot crashes or shows a blank window | Repair, then Reset the app |
| Windows key + C opens a small window | Change Copilot Keyboard Shortcuts in Account > Settings |
| Copilot stopped working after an update | Install Windows and Store updates, then run the Get Help troubleshooter |
| Copilot and Windows Update both behave abnormally | Run DISM, then SFC |
FAQ
Why is Copilot missing from my Windows 11 PC?
The current Windows Copilot experience is a standalone app, and it may not be installed. Check Start > Settings > Apps > Installed apps and search for Copilot. If it is absent, install Copilot from the Microsoft Store.
Can I use my work or school account with the Windows Copilot app?
Microsoft’s current documentation specifies a personal Microsoft Account for the Windows Copilot app. Microsoft 365 Copilot is a separate experience that uses work or school accounts.
Why does Windows key + C open a small Copilot window?
The shortcut may be configured to open Copilot quick view rather than the full application. In Copilot, open Account > Settings > Copilot Keyboard Shortcuts and change the behavior.
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What is the difference between Repair and Reset for Copilot?
Repair attempts to fix the app without removing its local data. Reset clears the app’s local data and settings, so you may need to sign in again. Microsoft does not provide these options for every app installation.
Will reinstalling Windows 11 delete my files?
The Windows 11 option at Settings > System > Recovery > Fix problems using Windows Update > Reinstall now reinstalls the current Windows version while preserving apps, files, and settings. The option may be unavailable on managed PCs or systems missing required updates.
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