I have client that has an XP machine which has is being used as a file/printer server of sorts. After installing about 2 years worth of updates and upgrading AVG from 8.5 to 2011 on the XP server other computers on the network have had problems printing to the network printer shares. They can see the printers on the server but generally get an error when trying to print (print spooler not running or not authorized to access). I can print from the server itself.
I have stop/started the printer spool, turned the firewall on/off (orginally it was off), checked the exceptions on the firewall and removed AVG. As I said the firewall was originally turned off, when the printing problems started and I turned the firewall back on the printer problem disappeared for about 2 days. It has now reappeared and I can not print at all from another networked computers.
There are only about 4 computers on the network. All of this worked fine for about 2 years until I touched it. Needless to say I am looking bad right now. Any ideas on things I can try?