UmlDebugger can't connect to/find Visual Studio instance.

If the "Connecting to Visual Studio" dialog does not show your currently running Visual Studio instance might have the following reasons:

1. The Visual Studio Extension is not installed.
2. Visual Studio is running in another user context (especially as administrator).

Troubleshooting:

1. Check if the Visual Studio extension is installed and enabled:

   1. Check if the following file is present in the UmlDebugger installation path: LL.MDE.Apps.UmlDebugger.UmlDebuggerVsExtension.vsix
      ^{(default installation path: C:\Program Files (x86)\LieberLieber\EmbeddedEngineer[version]\UMLDebugger)}

   2. If the vsix file is missing restart the Embedded Engineer setup and add the Visual Studio Debugger feature:

      1. Start msi file
      2. Select "Change"
      3. Check that the following feature is enabled:
         UmlDebugger → Debugger Access Plugins → Visual Studio Debugger

   3. Make sure the LL.MDE.Apps.UmlDebugger.UmlDebuggerVsExtension.vsix is installed and enabled for your Visual Studio 

      1. Open Visual Studio

      2. Goto Menu: Tools → Extensions and Updates... → Installed

      3. if the extension LieberLieber UmlDebugger Extension is missing execute the LL.MDE.Apps.UmlDebugger.UmlDebuggerVsExtension.vsix file.
      4. if the extension LieberLieber UmlDebugger Extension is disabled enable it.
2. Check if Visual Studio and UmlDebugger run in the same user context:
   Look at the title bar of your Visual Studio instances if the title looks like  ..... - Microsoft Visual Studio (Adminstrator) you need to start the UmlDebugger with the option "run as adminstrator"