the 8.1 version of windows live messenger is not yet supported by Windows
Vista

that's why you cant sign in. i have the same problem.
guess we just have to wait for a brand new updated version
"DaLonelyBaptst" wrote:
> When i try to sign in on Windows Live messenger on my Vista Premium it fails
> to sign in and comes up with the troubleshooter. I run the troubleshooter
> and there are supposedly no problems, everything is fine. It is allowed on
> my firewall and i can sign into hotmail.com. Anyone help me??