Check for available application updates. Open the messenger application, access the "Help" menu and click “Check for Updates.” If an update is available, click “Install” to download and install it. When the update completes, attempt to access a chat room. If it crashes again, restart your computer and try to join a chat room again.
When Yahoo! Messenger crashes while you are attempting to join a chat room on Windows 7, it could be the result of outdated software or the wrong settings in your Web browser. Take a few troubleshooting steps to fix the situation; if you are still unable to join Yahoo! Chat, contact Yahoo! for technical support.
Although you may use any Web browser with Yahoo! Messenger, it is recommended that you use Internet Explorer to improve the functionality of the application. If the application is crashing when you attempt to join a room, reset your Internet Explorer Web browser configuration. Open a browser window and click “Tools” in the top menu. Click “Internet Properties," then click the “Advanced” tab. Click the option to reset your personal settings and close the browser.
Uninstall the Yahoo! Messenger application if it still crashes when you join a chat room. Click “Start,” “Control Panel,” “Programs” and “Programs and Features.” Click “Uninstall” in the top menu after selecting the messenger application. After the removal completes, access the Yahoo! website and download the application again. When the installation wizard begins, follow the prompts to set it up. Attempt to join a chat room again when the installation completes.
Restarting your computer may also resolve a problem with joining a chat room through Yahoo! Messenger. Also check for Windows updates for your computer by clicking “Start,” entering “Update” in the search field and selecting “Windows Updates” from the search results to check for the newest updates. Install any available updates and restart your computer, then relaunch Yahoo! Messenger and attempt to join a chat room.
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