Until upgrading to Catalina I have printed successfully over my home network to a shared USB connected printer attached to a Windows 10 PC. Its worked for 10 years. (All set up using the Windows option in the Printer Setup Menu).
Now I can't connect at all to the windows PC, and the shared printer no longer shows in the printer setup page. The windows authentication credentials havent chagned, and are stored in my keychain. I also can't Connect shared windows folders using smb.
Any useful pointers?