I receintly had a change to the web site to use HTTPS rather than HTTP for the sign-on. Now when I record and run a web test I hang on the sign-on page loading dependants.
If I turn of Parse dependant requests, it works fine.
Is there a reason behind this
Can you try setting the following at the beginning of your web test. You can do this either by converting to a coded web test or by writing a WebTestPlugin.
ServicePointManager.Expect100Continue = false;
Did this work for you