Printer Scanner "Communication Error"
4.5
The printer prints fine, but the computer cannot find the scanner.
Symptoms
- Scanner not found
- WIA error
- TWAIN error
Possible Causes
- Firewall blocking port
- WIA service stopped
- Incomplete driver install
Step-by-Step Fix
1
Restart WIA Service
Services.msc > Windows Image Acquisition (WIA) > Restart.
2
Disable Firewall Temporarily
See if the scanner works with the firewall off; if so, add an exception for the printer app.
3
Use "Scan to USB"
If network scanning fails, use a USB drive directly on the printer.
When to See a Technician
Scanning often uses different network ports than printing, which is why one can work while the other fails.
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