Hello, we have installed Windows Server 2012 R2 with print server. We have 12 printers. Workstations have installed Windows 10 Pro. Each user have install some printers using GPO. Users have roaming profile. Everything was OK last three years.
we have this problem last month...users see every printers others users in Control panel and printers are duplicated with every login. We have for example 70 or more printers in control panel on some PC.
When but user open print dialog for example in notepad, he see only correct printers by GPO.
I tried delete keys from regedit by:
https://www.amorales.org/2019/05/duplicate-printers-showing-up-in-windows.html
but not working for me

There are many devices Xerox Desktop Print Experience in device manager in software components
When i unnistall devices, all is OK.
Unfortunately... they are again installed after restart PC.

