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Why is UNDO CLOSED TAB disabled by default?

Posted

Whenever my browser is updated, the UNDO CLOSED TAB is disabled by default. At that time, I need to go to about:config to enable them.

Whenever my browser is updated, the UNDO CLOSED TAB is disabled by default. At that time, I need to go to about:config to enable them.

Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 11.0.06
  • Version 5.38.6.0
  • Google Update
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Next Generation Java Plug-in 11.20.2 for Mozilla browsers
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers
  • np-mswmp
  • Nokia Suite Enabler Plugin
  • Picasa plugin
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 15.0 r0
  • iTunes Detector Plug-in

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:34.0) Gecko/20100101 Firefox/34.0

More Information

CoryMH 229 solutions 1076 answers

Hello,

Please see the article How to fix preferences that won't save.

You may have a user.js file setting that preference each time you start up Firefox. Information on how to remove it is in the article above, or more specifically this section:

If you have no user'js file, the article shows other possible reasons why the preference keeps getting reset.

Hello, Please see the article [[How to fix preferences that won't save]]. You may have a ''user.js'' file setting that preference each time you start up Firefox. Information on how to remove it is in the article above, or more specifically this section: * https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save#w_user-js-file-overriding-preferences If you have no ''user'js'' file, the article shows other possible reasons why the preference keeps getting reset.