• Does your printer do a standalone copy?
• If the printer does standalone copy then printer hardware is fine and the issue is driver related
• If the printer cannot do a standalone copy or makes clicking noises. check the scanner lock below the scanner bed.
• We need to know if standalone copy works in the first place, if standalone copy works then you can proceed to the next step.
• I understand the printer is printing fine from the computer.
• Check the device manager - right click on My Computer>left click on properties>left click hardware>left click device manager
• Is there a listing of imaging devices? if yes what is listed under imaging devices? if printer is listed under imaging devices does it have anything like #1 or #2 ?
• Is there a listing of other devices? if yes what are the listings under other devices ?
• Was the printer uninstalled using the printer CD or was the driver updated ? Did you try using the driver downloaded from the website - maybe a good idea to try since you get a file missing error which can happen with a scratched CD.

• Right click on Dell AIO Printer A940 with a !
• • Click on update driver
  • Choose installed from a list of specified locations (Advanced) and click next
  • Choose dont seach I will choose the driver to install and click next
  • Click on have Disk
  • Click on browse and under lookin choose the CD driver where the printer CD is listed
  • double click on drivers
  • double click on scan
  • highlight the file listed and click open you will come back to the previous screen
  • follow the onscreen prompts by clicking next.
  • If you get a message that this driver is not digitally signed. choose continue anyway.
  • The last step would be to click on finish.
  • Recheck the device manager under imaging devices if the problem persists.
• Note: If the antivirus kicks in at any point during the installation choose the appropriate option to allow the program to execute.

My printer does do standalone copying.

Under imaging devices is Dell AIO Printer A940 with a ! highlighted. No other devices listed.

Before I uninstalled I did a driver update both w/CD and going to website myself.  After I uninstalled then reinstalled I did another driver update. Still won't scan.

• You need to choose dlbascxp.inf  do not choose any of the language folders.
• with regards to dlbaaiox.exe - do you have an antivirus/firewall on your computer. please add this file to the list of exceptions in the firewall settings.

• dlbaaiox.exe  should be added to exceptions list in the antivirus fire wall.
• Could you kindly tell me what happened during the update driver?
• also are you logged in the administrator account?

• Uninstall printer using the CD and then reinstall the printer after restarting.
• Make sure all firewall and antivirus are disabled during installations.
• Do not reinstall using update driver.