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Firefox running in Task Manager but not loding its interface

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  • Last reply by cor-el

Operating System: Windows 7 32 bit Firefox Version Currently Installed: Latest available on mozilla website

Issue Description: When firefox is started either in normal or safe mode. It starts the process for firefox.exe in Task Manager but GUI interface for browser is never initiates. Firefox.exe takes CPU utilization of 25% and remains there untill process is manually killed. It happens with all versions of firefox

Operating System: Windows 7 32 bit Firefox Version Currently Installed: Latest available on mozilla website Issue Description: When firefox is started either in normal or safe mode. It starts the process for firefox.exe in Task Manager but GUI interface for browser is never initiates. Firefox.exe takes CPU utilization of 25% and remains there untill process is manually killed. It happens with all versions of firefox

All Replies (1)

A possible cause is security software (firewall,anti-virus) 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 and the plugin-container 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:

See also:


Create a new profile as a test to check if your current profile is causing the problems.

See "Basic Troubleshooting: Make a new profile":

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See: