Using App Volumes 2.13, Windows 7 SP1 x64, Firefox x64 58.0.1 and Flash Player 28. No Anti-virus is installed.
Scenario 1: An AppStack is created with only Firefox installed. No Writable Volume is used.
Opening Firefox and navigating to the "vSphere Web Client (Flash)"
Flash Player for Firefox x64 is installed
Login to vSphere Web Client - Successful
Scenario 2: An AppStack is created with only Firefox installed. A [template_uia_plus_profile.vmdk] Writable Volume is used.
Opening Firefox and navigating to the "vSphere Web Client (Flash)"
Flash Player for Firefox x64 is installed
Login to vSphere Web Client - results in
Hoping someone else has experienced this behavior and has advice.