git-ecosystem/git-credential-manager · info · OperationCanceledException

User cancelled dialog.

Error message

User cancelled dialog.

What it means

Thrown when the user closes or cancels a GUI credential dialog, indicated by the dialog's WindowViewModel.WindowResult being false. It is GCM's way of surfacing a deliberate user abort as an OperationCanceledException.

Solutions

1. Re-run the operation and complete the dialog to proceed
2. Make the credential dialog non-interactive by pre-supplying credentials via configuration or a credential helper
3. Catch OperationCanceledException in the caller and treat it as an expected user abort rather than a failure

Example fix

// before
catch (Exception ex) { log.Error(ex); }
// after
catch (OperationCanceledException) { log.Info("User cancelled authentication."); }
catch (Exception ex) { log.Error(ex); }

try { /* auth flow */ }
catch (OperationCanceledException) { Console.Error.WriteLine("Authentication cancelled by user."); return ExitCode.Failure; }

When it happens

Trigger: A modal authentication window (shown by a derived AuthenticationBase implementation) is dismissed via Cancel or the X button so viewModel.WindowResult is false when ThrowIfWindowCancelled checks it.

Common situations: User clicks Cancel in the sign-in dialog; user closes the window without entering credentials; automation accidentally dismisses the dialog.

Related errors

• User cancelled dialog.
• User cancelled dialog.
• Cannot show prompt because GUI prompts have been disabled.
• User cancelled dialog.
• User cancelled dialog.

AI-assisted analysis of git-ecosystem/git-credential-manager@e8ce762cd0 (2026-09-11). Data as JSON: /api/errors/47d8f8ff8416443e. Report an issue: GitHub.

Appendix: source

Thrown at src/Core/Authentication/AuthenticationBase.cs:122

                Context.Trace.WriteLine($"{Constants.EnvironmentVariables.GitTerminalPrompts} is 0; GUI prompts have been disabled.");
                throw new Trace2InvalidOperationException(Context.Trace2, "Cannot show prompt because GUI prompts have been disabled.");
            }
        }

        protected void ThrowIfTerminalPromptsDisabled()
        {
            if (!Context.Settings.IsTerminalPromptsEnabled)
            {
                Context.Trace.WriteLine($"{Constants.EnvironmentVariables.GitTerminalPrompts} is 0; terminal prompts have been disabled.");
                throw new Trace2InvalidOperationException(Context.Trace2, "Cannot prompt because terminal prompts have been disabled.");
            }
        }
        
        protected void ThrowIfWindowCancelled(WindowViewModel viewModel)
        {
            if (!viewModel.WindowResult)
            {
                throw new OperationCanceledException("User cancelled dialog.");
            }
        }
        
        protected IntPtr GetParentWindowHandle()
        {
            if (int.TryParse(Context.Settings.ParentWindowId, out int id))
            {
                return new IntPtr(id);
            }

            return IntPtr.Zero;
        }

        protected bool TryFindHelperCommand(string envar, string configName, string defaultValue, out string command, out string args)
        {
            command = null;
            args = null;

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