We have Siebel integration to 9.0 QC environment. Siebel launches and allow to create defects with below code.

QCConnection = new ActiveXObject("TDApiOle80.TDConnection.1");
QCConnection.Connect("DEFAULT", Login_Proj);

Eventhough 9.0 is not supported IE8 users after clicking a button they have in Siebel, Quality center page opens on their machines and authenticate will happen automatically.

After upgrading to 9.2 we observed, Siebel is able to launch QC but somehow it is not authenticating automatically. This behaviour observed on IE7 and IE8.

Is their any internet setting causing this issue. We have developed this Java Script.

Any help appreciated on this.