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Firefox won't load some websites

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Firefox has been working good until now. It started acting weird after a pop up came up saying something like "Start Firefox in safe mode or Reset Firefox" I misread reset as restart and clicked that and now sites like Gmail, Kongregate, and Bing won't load. I uninstalled Firefox then reinstalled it, I restarted my computer, I did a system restore, and I used safe mode on my computer still nothing. What is wrong? How can I fix this?

Firefox has been working good until now. It started acting weird after a pop up came up saying something like "Start Firefox in safe mode or Reset Firefox" I misread reset as restart and clicked that and now sites like Gmail, Kongregate, and Bing won't load. I uninstalled Firefox then reinstalled it, I restarted my computer, I did a system restore, and I used safe mode on my computer still nothing. What is wrong? How can I fix this?

Todas as respostas (5)

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Do you still have an "old settings" folder on your desktop from the Reset? You can recover your old settings from there. There is a general article on this, but I'm not sure whether there might be an easier way.

General article: Recover important data from an old profile

As for why the pop-up appeared in the first place, I'm not sure. A crash maybe? Or if you hold the Shift key when starting Firefox, you'll get that dialog.

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The folder on the desktop is called "Old Firefox Data".

In what way started Firefox to act weird?


Do a malware check with some malware scanning programs on the Windows computer.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:


Another 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:

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I will give that a try.

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Alright I tried it last night no malware or spyware found. And Firefox is unblocked not blocked. Can I delete everything from Firefox and reinstall it with a fresh start instead by delete everything I mean all the things in the Old Firefox Data folder and what not?