Steps to Disable or Remove addons (FOR HELP CALL US ON OUR TOLLFREE NO.1-800-862-6504 )

Disabling an extension or theme will turn it off without removing it:

1. Click the menu button  New Fx Menu and choose Add-ons. The Add-ons Manager tab will open.
2. In the Add-ons Manager tab, select the Extensions or Appearance panel.
3. Select the add-on you wish to disable.
4. Click its Disable button.
5. Click Restart now if it pops up. Your tabs will be saved and restored after the restart.
6. To re-enable the add-on, find it in the list of Add-ons and click Enable, then restart Firefox if required.

How to disable plugins

Disabling a plugin will turn it off without removing it:

1. Click the menu button  New Fx Menu and choose Add-ons. The Add-ons Manager tab will open.
2. In the Add-ons Manager tab, select the Plugins panel.
3. Select the plugin you wish to disable.
4. Select Never Activate in its drop-down menu.
5. To re-enable the plugin, find it in the list of Plugins and select Always Activate in its drop-down menu.

How to remove extensions and themes

1. Click the menu button  New Fx Menu and choose Add-ons. The Add-ons Manager tab will open.
2. In the Add-ons Manager tab, select the Extensions or Appearance panel.
3. Select the add-on you wish to remove.
4. Click the Remove button.
5. 
   
6. Click Restart now if it pops up. Your tabs will be saved and restored after the restart.

FOR HELP CALL US ON OUR TOLLFREE NO.1-800-862-6504 
Source By: Mozilla Support