Very few posts suggest using LOGON_TYPE_NEW_CREDENTIALS
instead of LOGON_TYPE_NETWORK
or LOGON_TYPE_INTERACTIVE
. I had an impersonation issue with one machine connected to a domain and one not, and this fixed it.
The last code snippet in this post suggests that impersonating across a forest does work, but it doesn’t specifically say anything about trust being set up. So this may be worth trying:
const int LOGON_TYPE_NEW_CREDENTIALS = 9;
const int LOGON32_PROVIDER_WINNT50 = 3;
bool returnValue = LogonUser(user, domain, password,
LOGON_TYPE_NEW_CREDENTIALS, LOGON32_PROVIDER_WINNT50,
ref tokenHandle);
MSDN says that LOGON_TYPE_NEW_CREDENTIALS
only works when using LOGON32_PROVIDER_WINNT50
.