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I’ve been getting the 80072745 error in Windows Live Messenger the last 4 days. I contacted Microsoft but there was no answer from their side. I searched a lot but no solution on the net seemed to work with the error I was getting.
I’ve installed Live messenger 8.0, Live Messenger 8.5 and also the beta version (9.0) but every time, the same error pop up. I tried to remove the messenger and reinstall it but no luck! I removed even the registry keys messenger uses and installed it again, but nothing changed. The troubleshooting wizard reported that everything was fine and the connection was OK!
I installed Windows Messenger 5.1 for XP and tried to login, and that WORKED!! so I found out that there’s no problem with my account, my IP or microsoft services’ servers!
After some tests, I found out that the problem is that I can’t send data to the messenger servers. I had OUTPOST FIREWALL PRO 2008 installed on my computer. I configured the firewall to trust Live Messenger and allow TCP and UDP communications for the messenger, but the problem was still there. I uninstalled Outpost Firewall and restarted the computer, but still no luck!
Today, I thought again about what might cause the problem… my antivirus software… it might be blocking some live messenger activities. I had ESET NOD32 PRO Antivirus installed on my system. By uninstalling the antivirus and restarting the system, Windows Live Messenger could connect again!!
Well, please keep in mind that IT IS ESSENTIAL to have an antivirus and very recommended to have a Firewall, but sometimes incompatibility issues might show up.
Now I’ll be using McAfee VirusScan Enterprise 8.5 and McAfee Personal Desktop Firewall, because with these two, I had no compatibility issues yet!
So the 80072745 error: “We were unable to sign you in to the MSN Messenger, possibly because of a problem with your Internet connection. Please try again later. 80072745″ in Live Messenger is solved!
But remember that each situation should be studied well before trying anything. So, don’t rush into uninstalling your antivirus or firewall, first, try other alternatives listed here:
And feel free to contact me if you have any issues on this topic. The best and fastest way would be to let comments here and to subscribe to the RSS feeds to be able to follow up the discussion(s).
Please remember to Digg and rate this article if it helped you out!
J’ai reçu l’erreur 80072745 dans Windows Live Messenger, les 4 derniers jours. J’ai contacté Microsoft, mais aucune réponse de leur part. J’ai chercher sur google beaucoup mais aucune solution sur le net semblait fonctionner avec mon problème. J’ai essayé la version Live messenger 8.0 , Live Messenger 8.5 ainsi que la version beta (9.0), mais tout le temps, la même erreur se produisait.J’ai essayé d’enlever le messenger et le réinstaller, mais pas de chance! J’ai même enlevé les clés de registre que messenger utilise et j’ai installé de nouveau, mais rien n’a changé.
L’assistant de dépannage a indiqué que tout allait bien et la connexion est OK!
J’ai installé Windows Messenger 5,1 pour XP et a essayé de me connecter, et ca MARCHE!
Alors j’ai découvert que il n’ya pas de problème avec mon compte, mon IP, ou les services ou serveurs de microsoft!Après quelques essais, je suis arrivé a la conclusion que le problème est que je ne peux pas envoyer des données vers le serveur de messagerie de MSN.
J’avais OUTPOST FIREWALL PRO 2008 installé sur mon ordinateur. J’ai configuré le pare-feu tel que Live Messenger soit permis a ce connecter et à permettre les communications TCP et UDP pour le messenger, mais le problème était toujours là. J’ai désinstallé Outpost Firewall et redémarré l’ordinateur, mais toujours pas de chance!
Aujourd’hui, j’ai pense à nouveau à ce qui pourrait causer le problème … Et j’ai vu que mon logiciel antivirus peut bloquer une partie des activités du messenger.J’avais “ESET NOD32 PRO Antivirus” installé sur mon système. En désinstallant l’antivirus et de redémarrer le système, Windows Live Messenger pourrait se connecter à nouveau! Et je suis de retour sur le réseau!
Eh bien, s’il vous plaît gardez à l’esprit que, IL EST INDISPENSABLE d’avoir un antivirus et très recommandé d’avoir un pare-feu, mais parfois des incompatibilités pourraient apparaître.
Maintenant, j’installe “McAfee VirusScan Enterprise 8.5″ et “McAfee Personal Desktop Firewall”, car avec ces deux, j’ai pas de problème de compatibilité pour l’instant!
Donc, l’erreur 80072745 : “Nous n’avons pas pu vous connecter à MSN Messenger, peut-être à cause d’un problème avec votre connexion Internet. S’il vous plaît réessayer ultérieurement. 80072745″ dans Live Messenger est résolu!
Mais rappelez-vous que chaque situation doit être étudiée bien avant de tenter quoi que ce soit. Donc, ne vous précipitez pas de désinstaller votre antivirus ou pare-feu, d’abord, essayez d’autres solutions citées ici:
Et N’hésitez pas à me contacter si vous avez des questions sur ce sujet. La meilleure et la plus rapide serait de laisser des commentaires ici et de souscrire aux flux RSS pour être en mesure d’assurer le suivi de la discussion.
PrintRespond / TrackbackJan 5, 2008
Posted in: Informatique - Computers38,838 viewsTags: Live Messenger
Hi,
I had same problem too. I tried lots of things to fix that but I couldn’t fix untill I read your post. I uninstalled Nod32 and it worked, thank you for your share;)
Burak
Hi
I have the exact same problem that you describe. After installing the latest version of nod32 (eset antivirus is been called now) and after rebooting MSN didn’t work anymore giving me the well know error code 80072745 :S
after a lot of forums reading and try all recommended solutions, nothing works!! (only using the 5.1 version works, just like you)
After a lot of frustration I start thinking in some change made lately in my PC and the only one was the antivirus update (from 2.X to 3.X)… so I un-install my antivirus.. try to log to MSN and works marvelous as before… so It was the new NOD32!!! I was very surprised ..considering that I disable it the service (on one of my tries) and that didn’t work.
so the conclusion was that the only solution was REMOVING nod32… and I don’t like that! I prefer nod32 before any other antivirus, I have a lot of bad experience with McAffe so I’m thinking on installing it. May be I could try kapersky.
Does any one has any explanation on this matter?
Regards
YO TENIA EL kapersky PERO NO ME GUSTO , NO PODIA ABIRLO TRATE DE REPARARLO PERO NO FUNCIONO Y LA UNICA OPCION ERA des-instalarLO Y LO HICE PERO MI PC TENIA ALGO PUSE EL AVG Y EL AVAST! Y RESULTO DE MARAVILLA. instalaro
I use a wireless modem/router to connect to the internet so this may not necessarily work for you but the idea might just be the same. I turn off my modem/router for 30 seconds and restarted it. While it is starting up, I went into the command prompt in Windows and typed “ipconfig /flushdns” in the command prompt. Restarted MSN Messenger and it connected.
hello….i have the same problem as you have…but ive always known that the problem was with the antivirus program….i had eset but that had no problems with msn….before i was using norton internet security it didnt allow me to connect to msn…now im using bit defender 2008 total security and it doesnt allow me to connect to messenger even though i set the firewall settings as it should be….but when i connect through a wired lan not wireless i can connect…if u have a bug fixer or anything or even know what to do i’d be very grateful…thanks a lot…
[...] http://www.gibni.com/live-messenger-cannot-sign-in-80072745-error-in-live-messenger-solved [...]
Hi!
I have same problem with Eset programs. With NOD32 3.x I find a solution (I try only once, and it have worked – it doesn’t mean, that will work anytime): At the Task Manager (Ctrl+Alt+Delete) close the ekrn.exe program (it will restarting immediatly automaticly, so, it isn’t disappear from the task list). And try to log in with Live Messenger.
I have tried with ESET Smart Security (ofcourse with opened MSN ports), but didn’t work…
Wow this was the only suggestion that actually worked! Thanks!