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reset firefox. can't access gmail. works in safari. annoying.

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I reset firefox on my Macbook. Now I can not log into gmail, blogger or you tube account. It won't recognize my gmail password either.

Everything works fine in Safari.

Installed Opera. won't work there either. Firefox 33.1.1 version.

Is there a way to change it back. Also older version of Firefox continually gave me spinning wheel. Was continually having to force quit even with emptying cache and restarting Macbook.

I reset firefox on my Macbook. Now I can not log into gmail, blogger or you tube account. It won't recognize my gmail password either. Everything works fine in Safari. Installed Opera. won't work there either. Firefox 33.1.1 version. Is there a way to change it back. Also older version of Firefox continually gave me spinning wheel. Was continually having to force quit even with emptying cache and restarting Macbook.

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Here's a guess:

Have you noticed any security certificate related issues after your reset? If your security software filters your web traffic, you usually need to set up Firefox to trust your security software again after a reset. There could be a similar issue with a new installation of Opera, but I am less familiar with it.