Wyse have recently released the 7.1 version of their ThinOS firmware. When testing this in our environment it broke USB mapping from our Wyse terminals for Citrix XenApp 6.0.
Normally USB drives are mapped under the Z drive.
We found that since 7.1 Wyse are now classing the USB drive as a removable drive, Makes sense right?
Previously they classed this as a Floppy Drive, our Citrix Policies allowed Floppy drives for a select few users and we disabled removable drives. As soon as we allow removable drives all starting working fine.