/UseEnv (devenv.exe)

For the latest documentation on Visual Studio 2017, see Visual Studio 2017 Documentation.

For the latest documentation on Visual Studio 2017, see -UseEnv (devenv.exe) on docs.microsoft.com. Starts Visual Studio and loads environmental variables into the VC++ Directories dialog box.

Devenv /useenv  

The following example starts Visual Studio and loads environment variables into the VC++ Directories dialog box.

Devenv.exe /useenv  

Devenv Command Line Switches