Does the modem dial and handshake?
Do you have the correct username and password?
Y E S:
Create a new dialer
N O:
Correct the entry
Still not working?
Check network stack and TCP/IP settings
Still not working?
Re-install Dial up Networking
Still not working?
Check the modem being used, drop the speed to 19200, remove error control and add AT&F1 in the advanced modem options. Remove software compression from the dialer.
Still not working?
Extract rasapi32.dll
Still not working?
Close down all background applications
Still not working?
Delete pwl files and log back onto machine
Still not working?
Check modems error code.
Check modems error code.