scanner is cancelling scan jobs

[DRTex1]

The scanner keeps canceling the scan job.

[Meghana_10]

Hello @DRTex1, Welcome to the HP Support Community. 

I understand you are facing a scan-related issue with your HP Color LaserJet Pro MFP M479fdw. Let us try a few troubleshooting steps to see if the issue can be resolved. 

Perform a power drain: 

• With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
• Remove USB cable, if present.
• Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
• Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer.
• Turn on the printer and wait till warm-up period finishes and the printer is idle

Reinstall the HP print driver (Windows)
 

Uninstall then reinstall the print driver on a Windows computer.

• In Windows, search for and open Programs and Features.
• elect your HP printer.
• Select Uninstall.
• In Windows, search for and open Devices and Printers.
• In the Devices and Printers window look for your HP Printer. If you see it listed, right-click on it and choose "Delete" or "Remove Device.”
• Open up the run command with the "Windows Key + R" key combo.
• Type printui.exe /s and click OK.
• Click on the Drivers tab.
• Look for HP Printer driver. If you see it click on it and click remove at the bottom.
• Select OK.
• Select Apply and OK on the Print Server Properties windows.
• Close Devices and Printers.

And then reinstall the printer's full-featured drivers from the software and drivers link - HP Color LaserJet Pro MFP M479fdw Software and Driver Downloads | HP® Support

Hope this helps! Keep me posted. 

Have a great day!