working on an outsourcing company and when one of our customers changed CRM version so our surveillance stopped working.

We run software HP VUGEN (Virtual User generator) which emulates a Web browser and it worked well in version 8.2.2 but not now when we get  HTTP Error 401 - Unauthorized: Access is denied.

We use in Browser Emalation, User-Agent String,

 
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.3; .NET4.0C; .NET4.0E)

From a VUGEN Trace,

Action.c(44):     User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4
Action.c(44):     322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.3; .NET4.0C;
Action.c(44):      .NET4.0E)\r\n
Action.c(44):     Accept-Encoding: gzip, deflate\r\n
Action.c(44):     Accept-Language: sv\r\n
Action.c(44):     Accept: */*\r\n
Action.c(44):     Connection: Keep-Alive\r\n
Action.c(44):     Host: telluscrmprd:5555\r\n
Action.c(44):     \r\n
Action.c(44): t=2774ms: 364-byte response headers for "telluscrmprd/.../main.aspx" (RelFrameId=1, Internal ID=1)
Action.c(44):     HTTP/1.1 401 Unauthorized\r\n

Have tried a number of different variants but unfortunately failed with the authorization. I would appreciate if I could get a tip on how the emulation can be changed so the login to the application goes well again.

Thank you in advance,
ronander