Solved: Getting 401 Unauthorized while calling an ASMX service using windows authentication

added by Robert Greyling
3/24/2014 2:56:55 PM

3 Kicks, 57 Views

Today I’ve spent almost the whole day to figure out why an application (COM+) couldn’t authenticate against a ASMX web service. Using my favorite networking tools Wireshark and HTTP Fiddler I saw that the credentials didn’t get included in the initial request, and no other request was made when the 401 challenge came from the web service.