Attempting to use pass-thru authentication with ServiceDesk & Workflow with any non-Internet Explorer browser has not been possible. So for users of Chrome and Firefox you were always required to provide your login credentials.
Java scripting errors were preventing proper handling of the authentication information passed by the browser.
This issue has been fixed and will be included in the upcoming ServiceDesk 7.5 MP1 release, as well as the official Workflow 7.5 release that is part of ITMS.
For users of our 7.1 version, or those who are using 7.5 and don't want to wait for the upcoming release, you can download the updated login.aspx page attached to this article. Use the instructions below to apply it to your environment.
For Chrome users, as long as you are accessing the system by NetBios name you don't have to do anything else. However FireFox users will need to make the following change to their FireFox configuration.