As of Monday this week (as far as I know, nothing has been changed), both our Mac computers can no longer print to the networked windows printer here in the office.

The error I get when I try to print is: Connection failed: NT_STATUS_ACCESS_DENIED

The only thing I can think of that changed was on one of the Macs (not sure about the other) it downloaded a printer driver upgrade... not sure if that was last week or the week before...

Any ideas what could have happened?