I have contacted with MSN Messenger Support. I've got a reply from them. And at last I am now able to sign in with MSN Messenger 7. I'm posting here the reply I've got ...
quote:
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When you try to sign in to MSN Messenger after an upgrade, you may experience one of the following issues:
* Although you can connect to the Internet, you receive an error message that states that you do not have Internet connectivity.
* The error may say that you are behind a firewall and you may not have internet connectivity.
* The Connectivity Troubleshooter opens.
* You receive an error message that states that you have an invalid user name and password.
* You receive another sign-in error message.
The following conditions may apply:
* You have installed a firewall that is preventing access to MSN Messenger.
* The proxy settings are incorrect.
* The stored sign-in credentials are incorrect.
Try the following solutions in the order they are listed:
1. If you have received an error message that states that your user name and password are not valid, go to step 8.
2. Enable MSN Messenger through the firewall. Refer to “Firewall Enabling” document for steps appropriate to the customer’s firewall.
3. Try to sign into Messenger again.
4. Clear the HTTP proxy settings in MSN Messenger:
For Messenger Version 7:
i. Start MSN Messenger.
ii. Click Tools and then click Options
iii. Click Connection, and then click Advanced Settings under Connection Settings.
iv. Clear the proxy settings in the Advanced Connection window. To do so:
1. Delete the entries under SOCKS Version 4.
2. Delete the entries under SOCKS Version 5.
3. Delete the entries under HTTP Proxy Server.
4. Click OK, and then click OK again to save the settings.
5. Clear the proxy setting in Internet Explorer:
a. Start Internet Explorer.
b. Click Tools, and then click Internet Options.
c. Click the Connections tab, and then click LAN Settings.
d. Clear the Automatically detect settings check box.
e. Click OK, and then click OK again.
6. Try to sign into Messenger again.
7. Reregister the security dlls that may be conflicting with MSN Messenger. Follow the steps for your operating system:
a. Microsoft Windows XP
i. Click Start, click Run, type the following command, and then click OK: %windir%\system32\REGSVR32 softpub.dll initpki.dll wintrust.dll.
b. Note Three windows that state that the commands were successfully executed will appear. This may take several seconds. Therefore, make sure that you wait to receive all three messages before you continue.
8. Sign in to MSN Messenger.
a. Click File, and then click Sign In.
b. In the .NET Messenger Sign-in window, enter your user ID and password.
c. To set up Messenger to sign you in automatically, select the Sign me in automatically check box or the Remember my name and password on this computer check box.
d. Click OK.
Thank you again for contacting MSN Messenger Technical Support. We look forward to hearing from you again and providing you with reliable service. Do not hesitate to contact us again if you have any questions or concerns.
For additional on-line help, please go to:
http://messenger.msn.com/Help/
Sincerely,
Hector
MSN Messenger Technical Support.
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