I am running Outlook 2007 on a new Windows XP Pro machine. I am able to print from Word, Excel, etc. I am also able to print to printers that are shared by other users. But I am not able to print from Outlook to a networked Canon imageRunner 550. I was able to print to it earlier this week. The Canon is directly attached to the network. It is installed on my machine via a TCP/IP port.
I uninstalled the printer and reinstalled it - no luck.
I uninstalled the printer, deleted the driver (via Printers and Faxes - File - Server Properties - Drivers, and deleting the appropriate driver) and reinstalled it - no luck.
I ran several commands via the command line that registered some dll files (found the idea in another EE post.)