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Firefox doesn't opens https sites

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I use Ubuntu 15.10, Firefox version is 41.0.2. I can't access any https sites including google and mozilla. I get this error sec_error_library_failure

I use Ubuntu 15.10, Firefox version is 41.0.2. I can't access any https sites including google and mozilla. I get this error sec_error_library_failure
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All Replies (3)

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Try to uninstall and reinstall Firefox.

You can find the full version of the current Firefox release (42.0) in all languages and all operating systems here:

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Firefox is included in ubuntu by default. I tried to reinstall it using oficial ppa but it doesn't solves the problem

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Are there any inconsistencies reported at the bottom of the Help > Troubleshooting Information page?