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firefox has a security lock and red box around it

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  • Last reply by cor-el

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I downloaded Firefox onto my desktop, when I look at the icon it has what appears to be a lock, when I open ff, it is surrounded by a red box, sort of an outline in red around the browser window...

I downloaded Firefox onto my desktop, when I look at the icon it has what appears to be a lock, when I open ff, it is surrounded by a red box, sort of an outline in red around the browser window...

Modified by scrnv17

Chosen solution

Maybe your security software is blocking the Firefox program, so try to check the settings for Firefox in your security software.


A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

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Chosen Solution

Maybe your security software is blocking the Firefox program, so try to check the settings for Firefox in your security software.


A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See: