We have migrated to server 2012 (64 bit) with win 8.1 clietns (64 bit) and a new domain also. We have installed dotmatrix/laserjet and passbook printers in the local clients and shared them. The printers have been added in the local server. Now we have a common problem in all branch offices that the printing of passbooks or other print jobs in the dotmatrix printers display "Document sent to printer" but no printing takes place. We have to go the server and stop/start print spooler services every now and then and continue printing. We have removed HP laserjets installed in the clients suspecting corrupt driver files but still the printing problems exists. Pl guide.