I have an HP Officejet 8710 printer that used to be connected to my network without any issues. Since my router updated to the 1.20 firmware the printer refuses to connect to the network. The error that it gives is that it thinks MAC address filtering is enabled on the router - which it isn't. In fact, I can't even find anywhere in the router's configuration to enable/disable MAC address filtering.
Any suggestions? I've had a look through HP's support pages without much luck, although they are pretty useless. The only thing I can think of is going back to firmware 1.12 which worked fine.
EDIT - I have tried both with the password and using WPS, neither have worked.