ESET NOD32 and Windows Live Messenger singing in problem

Good evening (or morning, or afternoon),

I am running Windows Vista 64 bit, and have the latest version of Windows Live.

Recently my MSN has been playing up and coming up with error messages, with my NOD32 firewall turned on I get the error code: 8100030d, I have looked on the MSN site and gone through their instructions on how to supposedly solve the problem, but to no avail.

When I turn the firewall off I get the error code: 80072745, again I have looked on the MSN website and the guides were the least bit helpful.

It is weird as sometimes its fine with the firewall on and off, and other times (like now) it doesn't work at all.

I have tried re-installing Windows Live and still hasn't helped. I have no idea what to try next so I'm hoping someone here will be able to point me in the right direction... Maybe I need to somehow configure my firewall? (which again I don't know how).

Many thanks in advance!

 

I've got the same problem since I've installed NOD32 3.0
I can't connect with MSN 7.0 and 8.1 and I can't even install 8.5 for the same reason: error code: 80072745.
My configuration: Windows XP Pro SP3, no firewalls (deactivated the windows' too), NOD32 3.0.
No help from Microsoft site (just generic suggestions) no any ideas from the web.
Many thanks in advance for your help.

 

No, i'm just in an office LAN, cable connected.

No, I disabled it but no way to install and connect.

I hope this will help, I haven't tried yet. At the moment it was very urgent to me to work and use MSN so I downgraded NOD32 to previous version 2.7
By the way I wanna thank you very much for your suggestions and I'll give you news wether the Guide-lines will work.