Here's a nice fun one. PS4 enterprise, 3 servers. Policies are set to grab native drives, otherwise use Citrix UPD. There are no printer mappings, and no print drivers set to replicate. No session printers, no imported print servers, and no login scripts that run on the Citrix servers other than the default usrlogon.cmd files. I went through and deleted out all non-native MS drivers. In fact, I wiped out all drivers except the Citrix UPD. I went into the registry and verified that the only driver was listed under version-3 and was the Citrix UPD. All should be good, right? Nope. The next time a user logged on using a Canon driver, it auto-created, and auto-installed the driver. I can see it in the registry listed as a driver with Canon listed as the provider, and not Microsoft. My question to you guys, how is this driver being installed? I refreshed the local host cache on all servers (datastore is SQL), and did an update printer and driver information after deleting all the drivers, and verified that in the CMC, only the UPD was listed for this particular server I'm testing with (although it happens on all of them). Help! Adam