This article gives options for upgrading older versions of Yahoo! Messenger to resolve issues created by firewalls.

If you are still using Yahoo! Messenger 8 or 9, your firewall will probably prevent you from connecting successfully. A firewall is security software that prevents unauthorized access to your computer. Many company networks and some home networks use firewalls to keep their computers more secure. Firewalls protect against viruses and other types of malicious software.

Upgrading to  Yahoo! Messenger 10 or 11 will also gives you access to some great new features:

Please click here for instructions on upgrading and to learn about the new improvements in Yahoo! Messenger 10.

Please click here for instructions on upgrading and to learn about the new improvements in Yahoo! Messenger 11.