!
error Epson
Error Code E-12
Security key/password is incorrect, or TCP/IP setup is not correct.
? What Causes This
Entered security key/password does not match, security key/password index is not set to first number, or IP address/subnet mask/default gateway setup is incorrect.
✓ How to Fix It
Confirm security key/password is correct and index is set to first number. Verify IP address, subnet mask, and default gateway are correct. Restart the router/access point and reinstall product software if needed.
Source: page 49 of the official manual
From the manual
