Firefox crashes when using Yahoo Mail
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This article describes why Firefox may close itself unexpectedly when using Yahoo!® Mail. For problems with Firefox crashing when not using Yahoo!® Mail, see Firefox crashes - Troubleshoot, prevent and get help fixing crashes
The Yahoo!® Application State plugin can cause crashes. You'll need to disable this plugin.
At the top of the Firefox window, click on the button and then select At the top of the Firefox window, click on the menu and then select On the menu bar, click on the menu and select At the top of the Firefox window, click on the . menu and select
Click the menu button and then click ExitQuit .
- Open My Computer or Windows Explorer.
- Browse to the directory: C:\Program Files\Yahoo!\shared
- Delete the file npYState.dll. Now that this plugin has been removed, Firefox may stop crashing when using Yahoo!® Mail.
Removing the plugin will not affect your ability to use Yahoo! Mail.