We are having print spooler problems with our network users, when using shared printers from our print server. It coincides with upgrading our print server from Server 2008 to 2012, and then to 2016 Server. What is happening is all their shared printers on the clients go "offline". We can temporarily fix the issue by restarting the spooler on the client's machine, then the printers go online and they work - for a while. The issue repeats itself by the next day. I've made sure to run all available updates on the server and reboot it several times, but that doesn't help. Has anyone run into this issue? The clients are Windows 10, by the way.