Please click ' Accept as Solution' if you feel my post solved your issue, it will help others find the solution. If the solution provided worked for you, please mark accepted solution for this post. Install the latest version of PSDR 5.0.2 using this link. Try uninstalling the print and scan doctor from your PC and install the latest version of print and scan doctor and check if it helps. If the issue still persists after trying out the steps. This should allow you to run the Print and Scan Doctor and resolve your issues. If you are still unable to open the Print and Scan Doctor, click on the Processes tab and do the same with anything that has HP in the name. Press Ctrl, Alt, and Del on your keyboard at the same time.Ĭlick on the Print and Scan Doctor listed. Please provide the printer model to assist you better.Īs you mentioned you have issues opening print and scan doctor on your PC.įirst, to close your other instance of the Print and Scan Doctor: I understand you are getting error Another instance of this application is already running when you open the print and scan doctor on your PC.ĭid you make any software or hardware changes to your printer or PC? Hey there! Thanks for stopping by the HP Support Forums! Business PCs, Workstations and Point of Sale Systems.Printer Wireless, Networking & Internet.DesignJet, Large Format Printers & Digital Press.To download this file click 'Download' Add HP Deskjet 6940 Print and Scan Doctor 4.

Printing Errors or Lights & Stuck Print Jobs Download HP Deskjet 6940 Print and Scan Doctor driver v.4.6 for Windows 8.1 (32/64-bit), 8 (32/64-bit), 7 (32/64-bit), Vista (32/64-bit), XP Free HP Deskjet 6940 Print and Scan Doctor driver v.4.6.Notebook Hardware and Upgrade Questions.

Hp print and scan doctor for windows xp