I have a two Windows 2012 servers configured with RDP running as a farm. Both servers have a large number of printers that are set up to print using LPR. They have been fine for 6 months, then after one server was rebooted for updates, LPR printing just stopped. Any jobs sent to the printers using LPR just hung in the queues, and nothing printed from them. All the other printers not using LPR printed fine. Rebooting the server didn't help, but in desperation, we loaded the LPR Print server onto it. Printers set up using the LPR Print server are printing. The 2nd server loaded the same updates and when rebooted worked fine.
Our problem is that these printers are using a third party software to create barcode labels, and although it does work, because the printers are not identical between the two servers we are having license issues with the third party software.
Our best solution is to get the standard LPR printing going again, but we have never found and errors or events on the server when printing using the standard LPR, and have found nothing on the internet even regarding this problem.
Anyone have any ideas?