Troubleshooting "Scanner Communication Failed" Errors for HP DeskJet 4122
Symptoms
- - "Cannot scan" error pop-up on PC
- - Scanner glass bulb refuses to move
- - Scanning from HP Smart app hangs at 0%
Common Causes
- - Windows Image Acquisition (WIA) service is stalled
- - Corrupted scanner Twain driver
- - Too long or damaged USB cable link
Step-by-Step Fix
Troubleshooting "Scanner Communication Failed" Errors on HP DeskJet 4122. Follow the sequence below and stop if the device shows a hardware warning or electrical fault.
Check and Restart Windows Scan Services
Press Win+R, type "services.msc" and press Enter. Locate "Windows Image Acquisition (WIA)". Right-click it and choose "Restart". Ensure "Startup Type" is set to "Automatic".
For wireless scanning, ensure your network security is not blocking UDP ports 161/162 (SNMP) and TCP port 9220.
Run HP Scan diagnostic
Open the HP Print and Scan Doctor tool and select "Fix Scanning". This will check scan communication, drivers, and Twain components, clearing driver cache errors.
Clear Temp Scan Cache Folder
Go to C:\Windows\Temp and delete temporary scanning profiles. Unplug your scanner's USB cable, wait 5 seconds, and reconnect to a USB 2.0 port directly on your computer (avoid USB hubs).
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