I have TWO ColorQube 8570dn printers in two separate locations, both connected via network. Each printer has two users. About a week ago or so ALL FOUR USERS can no longer print 2-sided duplex even though the Printing Preferences show "2-sided - long edge" and Microsoft Office is set to 2-sided printing as well. Tried installing both the newest PS and PCL5 drivers - no change. Ran a firmware update on one of the printers from 10.62. to 11.20 and tested again - still no change. All PCs are Windows 7 32-bit and print via a network connection. Duplex printing was working fine with no changes to anything up until a week ago. It doesn't seem to matter what program I print from (browser, PDF, Office, etc.) or what the 2-sided printing is set to: BOTH printers will only print to one side regardless of what the settings are. PLEASE ADVISE ASAP!
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