Regression: Installation of Patch1 for PC 12.20 PC Server corrupts the authentication user in IIS
When the users install Patch 1 for Performance Center 12.20, web applications (LoadTest & PCS ) related to PC Server cannot be accessed and HTTP Error 401.2 - Unauthorized - You are not authorized to view this page due to invalid authentication headers errors.
The above failures will prevents users from accessing teh LoadTest related pages of PC Server, reconfiguring PC Server in lab management etc.
The problem occurs becuase Patch 1 doesn't configur the credentials of the web application's user.
Running the Server configuration wizard tool on PC Server where Patch 1 installed, resolves this problem.
Refer to for more details at KM01764159