What happens when you try to get into a chat room on yahoo messenger 9.0? Click the Messenger menu at the top of Y!M and then click Yahoo! Chat and Join a room. If your request to join a chat room has been refused it is most likely because you are under 18. Yahoo restricts the chat rooms to those 18 and older for the protection and safety of minors. There is no reason to go back to 8.0. In fact if you do, you will not be able to get voice in the chat rooms, Yahoo fixed this issue for vista users in 9.0 (except if you are using Windows Vista home basic, then sorry you are out of luck).
Since you do not really say what the problem is when you try to get to the chat rooms, it is really hard to help with this problem. Do you see Yahoo Chat! in the Messenger menu? If you do not then either you accidentally installed one of the international versions of Yahoo Messenger that do not have chat rooms (such as Yahoo Messenger UK) or your download/installation was corrupt and a complete uninstall, reboot, and fresh download/install would fix that.
=================
COMPLETE UNINSTALL OF YAHOO MESSENGER
1. PLEASE NOTE that doing a clean uninstall of Yahoo Messenger will erase your message archives so read here about how to copy them http://help.yahoo.com/l/us/yahoo/messenger/messenger8/messenger/mstacopyarchive.html
Important: Do not put the archives back in until you are sure you can connect with the new download and installation and when you are sure Yahoo Messenger is working properly.
2. First uninstall Yahoo! Messenger through add/remove programs in the Control Panel. Vista users please read this for how to uninstall Yahoo Messenger, skip the part for now about reinstalling, I will go over that below.
http://help.yahoo.com/l/us/yahoo/messenger/messenger9/messenger/mstawreinstallvista.html;_ylt=AihrflFQxjzZeBTCSuhkKKWQLCV4
3. If you want to do a total clean uninstall of Yahoo Messenger then also navigate to Program Files on your hard drive and delete the Messenger folder inside of the Yahoo Folder. Follow this path (XP): My Computer>>C: drive>>Program Files>>Yahoo>>Messenger.
4. Reboot your computer (important!).
5. If you have a trusted registry scanner use it now. If you do not have a trusted registry scanner that you are familiar with than SKIP this step because you can screw your computer up if you do not know what you are doing. I personally use CCleaner but then I have been using it for years and know how to use the Registry scanner portion safely. Using any of these types of programs is USE AT YOUR OWN RISK. Make sure you know how to create a system restore point and use the built in backup feature to backup any of the Registry files it changes. Computer novices should definitely skip this step. Reboot again if you choose to do this step.
6. Now download and install Yahoo messenger again using the following link:
Full Installer for Yahoo Messenger 9.0.0.2162
http://download.yimg.com/ycs/msg/dl/msgr9/us/ymsgr900_2162_us.exe
Yahoo! Messenger 9.0 runs on Windows 2000, XP, and Vista, (maybe Windows 7 too).
++++++++++++++++++++++++
TIPS FOR DOWNLOAD AND INSTALLATION FOR VISTA USERS
7. Those on Windows Vista should right click the full installer (see link above) and choose “Install as Administratorâ€Â.
8. Vista users if still unable to install it, after you download the installer, you might have to temporarily disable the User Account Control (UAC). You can easily turn it back on. On the Control Panel (Category View) choose User Accounts and Family Safety, next choose User Accounts, and then click Turn User Account Control on or off.