On Server 2012 R2 with XenApp 7.6 I noticed a strange phenomenon, when logging in, after the processing of my Group Policies my XenApp session would hang at a black screen for about 10 seconds
In large environments, oftentimes there can be lots of Citrix Policies involved. The XenApp 6.5 and XenDesktop 7.x Studio and AppCenter consoles currently do not have an easy mechanism to move policies around quickly. This, however, can be easily accomplished by the use of PowerShell.