Logging into XenDesktop 7.x via NetScaler throws the error: “Cannot complete your request.”

Problem

You attempt to log into a XenDesktop 7.x environment through a NetScaler performing ICA Proxy but notice the following:

Solution

While there are various reasons why you would receive this error, one of the reasons is you are using a Load Balancing Virtual Server for your StoreFront servers as such:

… and forgot to change the Persistence setting from None to SOURCEIP under the Method and Persistence tab as shown in the following screenshot:

Proceeding to change the setting to SOURCEIP will correct the problem.