Got a client using:
Windows 7 Pro (32bit)
Brother HL-5350DN printer
Printer are TCP/IP and installed locally to each PC, there is no print server.
The issue occurs in only Outlook.
When they send a print job to the HL-5350DN form Outlook a "Connecting to printer" dialog box pops up and shuts down the print preview page. They then do it again and get the same message, after a couple of minutes the page closes and the document prints.
They have another printer on site and if they set the 2nd printer as default and send the print job everything is fine.
I've updated the firmware on the printer and I've installed the latest drivers to the machines.
A couple of solutions I've found were:
1) Delete the "BRUtils" registry key
2) In "Programs and features" right click on office "Change" & "Repair"
Both of those stop the problem, I can reboot the PC's multiple times, I can shut down, pull power, boot up and everything is fine. However, the next day the problem has returned. I've trawled the net and see that an Office patch caused this problem in Office 2007 but cannot find a permanent solution for this situation.