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Firefox is updating addons automatically

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I have the option "Update Add-ons Automatically" disabled, but when I run "Check for Updates", Firefox updates the addons. I want the function Check to only check, not install.

I have the option "Update Add-ons Automatically" disabled, but when I run "Check for Updates", Firefox updates the addons. I want the function Check to only check, not install.

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There's a Gear in the Addons Manager tab for dropdown menu - Reset All Addons to Update Manually.

Also, when you click More for each Addon there is Default - On - Off which can be used to allow Updates for that extension.