2171515 - WebIntelligence applet freezes .NET infoview while creating a new document

• When creating a new WebI document in InfoviewApp (ASP .Net), the applet seems to initialize but hangs at "creating a session" status.
• Other infoview .Net server at same patch level works fine where they can create webi reports without any issues.
• Issue started after a patch was installed.
• The isapi filter is well defined on IIS
• There is no error in Java Console, no error in IIS logs, Event Viewer.
• Generated Fiddler traces for both non-working environment and working environment. Observed that in Working environment cdzisapi.wis loads with result 200. Where as in non-working environment, cdzisapi.wis (cdzisapi filter) stops with the download sign. However there is no useful error on Text view.
• The cdzisapi filter itself is definied properly and the IIS application is able to access it without any issues.

Product Version: BO XI3.1 SP6
Product Patches installed: SP6
OS: Windows 2008 R2
CMS DB: SQL Server
Application Server: IIS7
JDK Version: 1.6.0_85
.NET or Java: .NET
Authentication Type: Custom SSO and Enterprise

3.1 sp3 sp6 webi java panel applet hang freeze stuck .net IIS asp create edit , KBA , BI-RA-WBI-NET , Web Intelligence .Net , BI-BIP-DEP , Webapp Deployment, Networking, Vulnerabilities, Webservices , Problem