i`ve tried to change the port number to 1527 (also 3333) in the service file, reboot the computer, but nothing changed.
how can i change the port/name when starting informix (i only typed in the portname when installing it) ?
The SQLHOSTS on the windows machine stay in the register.
I do'n work with IDS for windows a few years... but , what I remember you can change the values of SQLHOSTS with SetNet32 program or manually on the register.
Does you changed the IP of your machine?
Probably there are some differ between the hostname/IP configured in SQLHOSTS and the configuration of your Windows.