Various Logon Errors Missing Contacts

What is everything required for this to run?

I am running into various errors:
On the same a Win2K SBS Domain, half of the PC's (20 of 40) are not able to
connect to Live Messenger server some of the time, (even when no one else is
logged on)
These PC's and Users are on/have exactly the same:
subnet, ISA firewall client & security level, access to the PC, access to
the internet, PC make, PC model, OS, software level (XP Pro SP2), update
status, IE7, IE connection settings, antivirus software, antivirus
configuration, MS services running, MS firewall settings.

The connection troubleshooter gives a green checkmark on each item on it's
checklist, but the TCP test seems to be the only difference I can detect: On
non-working PC's this test shows the following:
Resolving server name...
Connected to the server...
Connected, verifying ability to send data now...
We are unable to connect (0).

On the PC's that have troubles, no one can log onto Live Messenger half the
time, but when someone does connect, the contact list is missing. And if they
re-add a contact that is online, they will not show up as online, nore can
you send them a message.

Problems codes are everything from:
Error Code: 80072745 "unable to sign you on"
Error Code: 8100030d "service is temporarily unavailable"

All of these are happening while others are logging in fine on other PC's

What are the MS services, ports, PC settings that are needed for Windows
Live Messenger to work at it's most basic level. (Sign in, maintain contact
list, send/receive instant messages) ?

Greetings David,

Have the following .reg file run at login or however else you wish to delete this reg key
(view .reg notepad obviously). Since you're the administrator, I'm sure you have your own
methods:
http://messenger.jonathankay.com/dow...lmpolicies.reg

There was a misconfiguration on the Microsoft side last week that can cause all the problems
you're facing although those actually getting error codes when trying to log in could be
something else, better to deal with those after this is out of the way however.

--
Jonathan Kay
Microsoft MVP - Windows Live Messenger/MSN Messenger/Windows Messenger
Associate Expert
http://www.microsoft.com/windowsxp/expertzone/
Messenger Resources - http://messenger.jonathankay.com
All posts unless otherwise specified are (c) 2006 Jonathan Kay.
You *must* contact me for redistribution rights.
--

"David - Network Admin" <David - Network > wrote in message
news:935F9B6F-4B31-4D47-B22D-...
> What is everything required for this to run?
>
> I am running into various errors:
> On the same a Win2K SBS Domain, half of the PC's (20 of 40) are not able to
> connect to Live Messenger server some of the time, (even when no one else is
> logged on)
> These PC's and Users are on/have exactly the same:
> subnet, ISA firewall client & security level, access to the PC, access to
> the internet, PC make, PC model, OS, software level (XP Pro SP2), update
> status, IE7, IE connection settings, antivirus software, antivirus
> configuration, MS services running, MS firewall settings.
>
> The connection troubleshooter gives a green checkmark on each item on it's
> checklist, but the TCP test seems to be the only difference I can detect: On
> non-working PC's this test shows the following:
> Resolving server name...
> Connected to the server...
> Connected, verifying ability to send data now...
> We are unable to connect (0).
>
> On the PC's that have troubles, no one can log onto Live Messenger half the
> time, but when someone does connect, the contact list is missing. And if they
> re-add a contact that is online, they will not show up as online, nore can
> you send them a message.
>
> Problems codes are everything from:
> Error Code: 80072745 "unable to sign you on"
> Error Code: 8100030d "service is temporarily unavailable"
>
> All of these are happening while others are logging in fine on other PC's
>
> What are the MS services, ports, PC settings that are needed for Windows
> Live Messenger to work at it's most basic level. (Sign in, maintain contact
> list, send/receive instant messages) ?