2009 MacPro running Mojave won't print from any app: spinning beachball
2009 MacPro running 10.14.6 needed for about 6 more months. Recently, it has started refusing to print from any application (Acrobat, Word, Excel, QuickBooks 2016.) Everything is normal until I try to print. Then, a spinning beachball that won't stop. Force Quit works sometimes ("Not Responding") but sometimes does not and I have to do a hard restart.
Usually, restarting fixes the problem, but sometimes has to be repeated several times before I can print again. I have deleted and reinstalled the two printers I use and made sure that all printer software and firmware is updated as much as possible for Mojave.
The computer is set to not shut down and to restart early each morning. Other than the printing problem, all is working normally.
I can provide an EtreCheck file if it would be helpful.
Any other suggestions?
Thanks.
Mac Pro, macOS 10.14