The End-Users are unable to use the Web Cam through a Published Desktop OS session launched using Workspace App (USB Device Being Redirected As Optimized USB)

• Let's take the PID & VID of the USB Web-Cam that is being used: https://www.synology.com/en-global/knowledgebase/DSM/tutorial/Compatibility_Peripherals/How_do_I_check_the_PID_VID_of_my_USB_device
• Through Citrix Studio, create a Policy using the following setting to assign it to AD Object or Delivery Group needed > Client USB Device Redirection: Allowed
• From the endpoint device using Workspace App, the following Sub-Key with the DWORD named "AutoRedirect" must be created in "Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Citrix\ICA Client\GenericUSB\Devices" > VIDxxxx PIDxxxx 
• Then, go to "ICA session Windows > Preferences > Connections > Generic USB Devices" and check the option "When a session starts, connect devices automatically"
• Now, the Web Cam must work through the Published Desktop OS session.

Problem Cause

USB Device was being redirected Optimized first by design.