In a Citrix session running on a Windows 11 22H2 Virtual Delivery Agent, the user might not see Universal Print Server (UPS) network printers in the unified print dialog that is displayed by Notepad and Wordpad.
Certain applications, such as Adobe Reader, Microsoft Word, and Microsoft Excel, that do not use the unified print dialog are not affected by this issue.
The following is a manual workaround for this third-party issue.
Run this command on the VDA as administrator:
reg add "HKCU\Software\Microsoft\Print\UnifiedPrintDialog" /v "PreferLegacyPrintDialog" /d 1 /t REG_DWORD /f
Alternatively, run the registry editor as administrator and manually, create a “PreferLegacyPrintDialog” DWORD registry value equal to 1 under the "HKCU\Software\Microsoft\Print\UnifiedPrintDialog" registry key path.