Windows Messenger SIP Connection Problem

[fwatkin]

Windows (not MSN) Messenger on one computer will not connect me to a SIP
Communication Service, yet it will on another computer (my old one) with
identical TLS Account and HTTP Proxy Connection settings. Both computers are
Windows XP SP2 with the lastest updates and were running the same WM version
5.1.0639. I also tried the lastest download version 5.1.0701 on the computer
that fails to see if it helped. It did not.

One visual difference is that on the one that fails, I get a differrent "Sign
in to a SIP Communication Service" dialog. It has one "Sign-in name" edit box,
whereas the one the works has three edit boxes including one for Domain\ID
and password. The one that fails seems to be making some kind of wrong
assumption.

This does not make any sense considering they are the same version of the WM
program with the same option settings.
Note that uninstalls and re-installs do not help.

 

[Guest]

I've seen this. In my case it was an NTLMv1 VS NTLMv2 issue. I did a
registry edit and set the system to use only NTLMv2 and is corrected the
issue.

 

[Guest]

Hi, How do you find this key?
BR Andreas

I've seen this. In my case it was an NTLMv1 VS NTLMv2 issue. I did a
registry edit and set the system to use only NTLMv2 and is corrected the
issue.