You might also try stopping and starting the Print Spooler. The link shows how to do this an clean the print queue, although I show nothing in the folder to delete. You can copy and paste in a command window.
What Drew is suggesting should also clean out the Queue, but this would not hurt.
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Do you show any drivers being loaded through Windows Update for the printer?
Also notice, if you have not, there are two properties options in the context menu. The middle one in the context menu is the Admin option.