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block black list

Add-ons (extensions, themes, and plugins) that are known to cause stability or security issues with Firefox or are incompatible are put on a "blocklist."

[[Customizing Firefox with add-ons|Add-ons]] (extensions, themes, and plugins) that are known to cause stability or security issues with Firefox or are incompatible are put on a "blocklist." __TOC__ = What does the blocklist do? = == Disables unsafe add-ons == Firefox will block the unsafe add-on from loading and present you at startup with the following message: {note}Firefox has determined that the following add-ons are known to cause stability or security problems{/note} {for mac}<br>[[Image:Add-ons Blocklist Mac1]]<br><br>{/for} To prevent these add-ons from running, click {button Restart Firefox}. == Blocks unsafe add-ons from being installed == When you try to install an unsafe add-on that is on the blocklist, Firefox will block the installation and display the message: {note}The add-on ''name'' has a high risk of causing stability or security problems and can't be installed.{/note} == Disables incompatible add-ons == Firefox will block the incompatible add-on from loading. {for fx35}In the Add-ons window,{/for}{for fx4}In the Add-ons manager tab,{/for} below the add-on, you've got the following message: {note}The add-on ''name'' is incompatible with ''your Firefox version''.{/note} == Blocks incompatible add-ons from being installed == In the [https://addons.mozilla.org/ Mozilla add-ons website], incompatible add-ons show up with a {button Add to Firefox} white button. If you click on the button, you will be prompted with the following message: {note}This add-on has not been updated to work with your version of Firefox.{/note} You can choose to ignore this message and click on the {button Install Anyway} button. When the download is complete, you will be prompted with the following message: {note}The add-on ''name'' could not be installed because it is not compatible with ''your Firefox version''.{/note} = Steps to take = == If the installed add-on is disabled == === Extension or theme === {for fx4} #{for win}At the top of the Firefox window, click on the {button Firefox} button ({menu Tools} menu in Windows XP), and then click {menu Add-ons}{/for}{for mac}On the menu bar, click on the {menu Tools} menu, and then click {menu Add-ons}{/for}{for linux}At the top of the Firefox window, click on the {menu Tools} menu, and then click {menu Add-ons}{/for}. The Add-ons Manager tab will open. # On the "Tools for all add-ons" menu, make sure that the {menu Update Add-ons Automatically} menu is checked. {/for} {for fx35} # {for win}At the top of the Firefox window, click on the {menu Tools} menu, and select {menu Add-ons}{/for}{for mac}On the menu bar, click on the {menu Tools} menu, and select {menu Add-ons}{/for}{for linux}At the top of the Firefox window, click on the {menu Tools} menu, and select {menu Add-ons}{/for}. The Add-ons window will open. # Select the {menu Extensions} or {menu Appearance} panel depending on the kind of add-on. # Then click {button Find Updates}. If Firefox finds an update, you will be prompted to install it and restart Firefox. {/for} === Plugin === [[T:plugincheck]] {note}'''Note:''' If there are no updates available, you may need to contact the developer of the add-on that was blocked.{/note} == Installation blocked == If you were blocked from installing an add-on, check to see if there is an updated version of the add-on you were trying to install. {note}'''Note:''' If there is not an updated version to install, you may need to contact the developer of the add-on that was blocked.{/note} = What unsafe add-ons are on the blocklist? = See '''[https://www.mozilla.com/blocklist/ list of blocklisted unsafe add-ons]'''.