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Copilot immediately crashing upon attempt to open.

Matthew B 0 Reputation points
2025-11-01T19:14:17.1033333+00:00

Whenever I try to launch the copilot desktop app, it seemingly does nothing. I've of course rebooted my computer, I've tried uninstalling it and reinstalling it, I've tried repairing and resetting it, all of which did not fix it. Using EventViewer I managed to find this error info (The error report itself is very long so I only copied what appears to be the most important information):

Application: Copilot.exe CoreCLR Version: 9.0.1025.47515 .NET Version: 9.0.10 Description: The application requested process termination through System.Environment.FailFast. Message: Task Faulted at File: AppInitializer.cs Method: InitializeAppAsync Line: 52 Description: The process was terminated due to an unhandled exception.System.ObjectDisposedException: Cannot access a disposed object. Object name: 'IServiceProvider'. at Microsoft.Extensions.DependencyInjection.ServiceLookup.ThrowHelper.ThrowObjectDisposedException() at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType) at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T] at CopilotNative.Platform.PlatformModule.<>c__DisplayClass1_2.<AddAuth>b__9() at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode) at System.Lazy1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor) at System.Lazy`1.CreateValue() at CopilotNative.Platform.Auth.AuthService.UpdateCachedAccount(AuthPlatformResult authResult)

at CopilotNative.Platform.Auth.AuthService.UpdateCurrentAccountInfo(IAuthProvider updatedAuthProvider, AuthPlatformResult authResult) at CopilotNative.Platform.Auth.AuthService.TrySignInWithAssociatedAccountAsync() at CopilotNative.AppInitializer.TryAuthenticateUserSilentlyAsync() at CopilotNative.AppInitializer.InitializePlatformAsync()

Microsoft Copilot | Windows Copilot | App
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  1. Bryan-V 8,345 Reputation points Microsoft External Staff Moderator
    2025-11-02T16:47:33.0566667+00:00

    Dear Matthew B,

    Thank you for reaching out to the Microsoft Q&A Forum.

    The app is crashing because its connection to your Windows Microsoft account is broken. It's trying to use an authentication service that has already been "closed", which points to a corrupted authentication token.

    This is why your troubleshooting didn't work. Those steps fix the application files, but the problem is with your account's cached credentials that the app is trying to read.

    You could try following these steps below to solve this issue:

    1. Re-link Your Microsoft Account:
      • Go to Settings > Accounts > Your info.
      • You will likely see your Microsoft account email. Click the link that says "Sign in with a local account instead".
      • Follow the prompts to create a temporary local account password and sign out.
      • Restart your computer.
      • Log back in using the new local account password you just created.
      • Launch Copilot. It will either work or, more likely, prompt you to sign in. Do not sign in yet.
      • Now, go back to Settings > Accounts > Your info.
      • Click the link that says "Sign in with a Microsoft account instead".
      • Log in with your normal Microsoft account.
      • Restart your computer one more time. Then try again.
    2. Check for a conflicting Work/School account:
      • Go to Settings > Accounts > Email & accounts.
      • Look under the section "Accounts used by other apps".
      • If you see an old or conflicting "Work or school account" listed, click on it and select "Disconnect" or "Remove".
      • Restart your computer and try Copilot again.
    3. Repair corrupted system files:
      • Go to Start, type cmd, right-click at Command Prompt > Run as administrator.
      • Run these commands one by one: 
             sfc /scannow
     DISM.exe /Online /Cleanup-Image /RestoreHealth
      • Once it's complete, restart your computer.
      • After restarting, go to Settings > Windows Update and try the installation again.

    If the solutions above don't fix the underlying auth state, your only other option is to report it via Feedback Hub and wait for a fix.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".  

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. Bryan-V 8,345 Reputation points Microsoft External Staff Moderator
    2025-11-16T13:44:41.9466667+00:00

    Hi Matthew B,

    I haven't received the message from you yet. 

    Please let me know if these steps I provided could help.

    If there is anything more that I can do for you or if anything is unclear, please do not hesitate to let me know.

    Sincerely,

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