I unable to find “Start external program” In the Properties window, then click on Debug option

[real_imrann]

I unable to find “Start external program” In the Properties window, then click on Debug option

To debug your plug-in code, you’re going to have to launch Revit from your Visual Studio debugger and load your plug-in into Revit.

 In order to be able to debug using Visual Studio, we have to make some manual edits to the project files by implementing the following steps:

1. In the Solution Explorer window, right Click Lab1PlaceGroup and select Properties.
2. In the Properties window, Go to Debug option and choose “Start external program”.
3. Browse for “Revit.exe” file and normally the file will be present in this path(C:\Program Files\Autodesk\Revit 20xx\Revit.exe).

(Edit the file path for Revit.exe if you’ve installed it in a non-default location).

           Thus, the Properties settings allow you to set the executable to launch when you start the debugger:

[jeremy_tammik]

The best way to find out is probably to search for something like "visual studio debug external":

https://duckduckgo.com/?q=visual+studio+debug+external

[mblackman]

for anyone else wondering, choose Debug Properties -> Create a new profile ->Executable

[ctm_mka]

It seems it depends on the type of project you create, for instance if you choose "Class Library (.NET Framework)" for 2024 & down, then OP's directions are correct. But if you choose just "Class Library", its a bit different.

[Moustafa_K]

see if this post helps