W2016 - Redirected printers not working - Win32 error code returned by the print processor: 50. The request is not supported.

Printing to redirected printers is not working anymore. (It's OK with W2008 R2).

RDP client being W7 (or Wyse ThinOS)

I tried with two different printers : Dymo Labelwriter 450 and Ricoh Aficio SP 4310N PS (and PCl5e).

- The driver is well present on the host side (the redirection occurs well).

- Easy Print disabled (GPO)

When trying to print, the popup message is "Error printing to ....", Then subsequent tries result in popups "Printer is in error state"

The Printservice log says at the end on the error entry   "...Win32 error code returned by the print processor: 50. The request is not supported."

When the RDP client is another W2016 RDSH, then printing to a redirected printer (network printer in that case)  works well.