Tentacle Setup Wizard links unable to find 'IExplore.exe'

[amatoproj]

Severity

minor inconvenience opening links during wizard

Version

Octopus.Tentacle.9.1.3772-net8.0-windows-win-x64

Latest Version

I could reproduce the problem in the latest build

What happened?

When clicking a link during the wizard, you get an unhandled error because IExplore.exe is not found.

Reproduction

Using Windows 2025 Server Base (ami-0d76b909de1a0595d in us-west-2)

1. Install Tentacle Version 9.1.3772
2. Click Get Started to set up a new Tentacle
3. In the Communication Style page, click the link "Learn more about choosing a communication style"
4. An error will appear.

Error and Stacktrace

An error occurred trying to start process 'IExplore.exe' with working directory 'C:\Program Files\Octopus Deploy\Tentacle'. The system cannot find the file specified.
System.ComponentModel.Win32Exception
   at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
   at System.Diagnostics.Process.Start(ProcessStartInfo startInfo)
   at Octopus.Manager.Tentacle.Util.BrowserHelper.Open(Uri uri) in BrowserHelper.cs:line 17
   at Octopus.Manager.Tentacle.TentacleConfiguration.SetupWizard.Views.CommunicationStyleTab.Navigate(Object sender, RequestNavigateEventArgs e) in CommunicationStyleTab.xaml.cs:line 22
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.Documents.Hyperlink.NavigateToUri(IInputElement sourceElement, Uri targetUri, String targetWindow)
   at System.Windows.Documents.Hyperlink.OnClick()
   at System.Windows.Documents.Hyperlink.OnMouseLeftButtonUp(Object sender, MouseButtonEventArgs e)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.ContentElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

More Information

Workaround

Navigate to https://octopus.com/docs/infrastructure/deployment-targets/tentacle/tentacle-communication