How can I launch an Internet Explorer process as another user, a la /netonly?

Question

I\'m trying to launch Internet Explorer as another user from our WPF app, so that when our users visit the (internal) website, they silently authenticate via Integrated Windows

Answer 1

Okay, I was very very close. The magic fix is adding -noframemerging to the iexplore.exe call, which...honestly I'm not sure what it does, it uses the phrase "process frame" which is awesome and perhaps means something to you.

In any case, this appears to be resolved.

var arguments = "-noframemerging " + url;
var pathToIExploreExe = GetFullPathToIExploreExe();
var commandLine = string.Format("\"{0}\" {1}", pathToIExploreExe, arguments);

uint LOGON_NETCREDENTIALS_ONLY = 2;
var lpStartupInfo = new CreateProcessWithLogonW_PInvoke.STARTUPINFO();
CreateProcessWithLogonW_PInvoke.PROCESS_INFORMATION processInformation;

CreateProcessWithLogonW_PInvoke.CreateProcessWithLogonW(
            userName,
            domain,
            pw,
            LOGON_NETCREDENTIALS_ONLY,
            null,
            commandLine,
            0,
            null,
            null,
            ref lpStartupInfo,
            out processInformation);