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Firefox Facebook issue

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I have 2 Facebook profiles for different purposes made with 2 different emails. I'm constantly logged in on my main one and checked the email of the other account. I clicked on one of the emails and followed its "View on Facebook" link. It obviously logged out my main account, but nothing more. So i open a new tab with facebook and this happened (see image)

I have deleted cache, cookies active logins etc and also restarted my pc. How do i fix this?

I have 2 Facebook profiles for different purposes made with 2 different emails. I'm constantly logged in on my main one and checked the email of the other account. I clicked on one of the emails and followed its "View on Facebook" link. It obviously logged out my main account, but nothing more. So i open a new tab with facebook and this happened (see image) I have deleted cache, cookies active logins etc and also restarted my pc. How do i fix this?

All Replies (2)

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Image of how my browser looks

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hi Lynxathrope, are you using kaspersky as your security program? if so, please disable the scanning of secure connections like it's described at https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_kaspersky, reboot your system afterwards and see if the issue is still occurring...