We have Windows 10 and Windows 7 Desktops all running Horizon View Agent 7.4.0. These are all instant clone desktops. On first login the Windows 10 desktops usb redirection fails with the error USB redirection is not available for this desktop
If you then disconnect and reconnect after like 30 seconds of USB initializing (which is a long time compared to Windows 7) the USB devices will show up properly.
On our Windows 7 desktops the USB redirection works properly every time and is much faster to initialize.
I have tracked the issue down to Appvolumes. If I remove it from the image, the USB Redirection works as expected. One Appvolumes agent is installed, it reverts to the previous non working USB. So this led me to look at the writable volumes. Upon inspection, I saw that there were 4 appstacks that were "missing". They were applied to a group that I was a member of and would not delete. Rather than mess around with the DB and risk a corruption, I decided to jut upgrade to version 2.15.0.41. I was then able to delete the 4 volumes in error state and viola! The VDI guests all now see the USB each and every time I log in.
EDIT: I spoke to soon. As soon as I reattached a volume and logged off, the USB no longer works.
Issue has now been resolved. Here are the steps I took.
I did a couple things to correct the issue. Not sure which was the actual “fix”
USB working as expected.