c# - Environment.GetEnvironmentVariable won't find variable value

Question

Why won't Environment.GetEnvironmentVariable("variableName") get a variable's value if the call is made from within a webMethod hosted on IIS and it will work if I call it from a console application on the same machine?

Where do I set up those variables to be visible to IIS web services? Should I use the second parameter from Environment.GetEnvironmentVariable(name, target) to get it?

It is actually really simple:

[WebMethod(Description = "Gets the environment variable value.")]
public string GetEnvironmentVariable()
{
    return Environment.GetEnvironmentVariable("VARIABLE_NAME_HERE");
}

And by the way, VARIABLE_NAME_HERE is set at the system and user level.

Answer 1

Restarting Visual Studio fixed it for me (guessing IIS Express also caches these values).