Force Skype for Business in non-optimized mode

You can force Skype for Business to run in the non-optimized mode for Horizon Client connections by setting the name of environment variable that will be present at connection time on the machine where Horizon Agent is installed. If the variable name is set, Virtualization Pack for Skype for Business reverts to fallback mode. For example if ViewClient_F5_APM environment variable is set on the Remote Desktop Agent machine when the Horizon Client machine connects from outside the network using F5 load balancer and you want to force non-optimized mode, set this value to be ViewClient_F5_APM. This policy is not configured by default.

The name of environment variable:

Registry Hive	HKEY_LOCAL_MACHINE
Registry Path	Software\Policies\VMware, Inc.\VMware VDM\Agent\VMWMediaProviderProxy
Value Name	SetForceNonOptimizedEnvVar
Value Type	REG_SZ
Default Value