
A Firefox Refresh essentially disables all plugins and resets Firefox's settings. This is sort of like reinstalling Firefox and is used if Firefox isn't working properly. The next thing I did was Refresh Firefox.That said, the first thing I did was check to ensure Gord's date and time were correct, and they were. SEC_ERROR_EXPIRED_CERTIFICATE under the 'Technical details' link.

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How to Fix: Firefox 'This connection is untrusted' (appears Randomly) Gord agreed and was able toĮasily replicate the error in which 'This connection is untrusted' kept appearingĪt random. My remote desktop support service in order to have a closer look at his Firefox 'This connection is untrusted' problem.
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With that detailed explanation out of the way, I asked Gord if he would like me to connect to his PC using This was certainly the case with Dell PC's back in 2015, and If that was the case, it may be possible for hackers to redirect your PC to any malicious website at random - and even fake your online bank website, in order to steal your passwords and personal information. ForĮxample, your browser's root certificates could have been compromised due to a malware attack

See 'This connection is untrusted' is not advisable for security reasons. Generally speaking, however, adding an HTTPS exception to a website when you Do not Add Exception when you see "This connection is untrusted" In my case, adding an exception to Firefox is OK because I know for a fact that it's my website I'm connecting to, and those are my certificates With the SEC_ERROR_EXPIRED_CERTIFICATE error (because certificates are only good for a period of time) - so In this instance, some of my HTTPS certificates have expired Scenario may be plausible is for a work-related activity on a website / server that is related to your work.įor example, I own this website and have generated my own HTTPS security certificatesįor my own experimental reasons (and because real HTTPS certificates cost money!). In fact secure and your system has not been compromised. The ONLY time you should add a security exception is if you explicitly know the website you're connecting to is You are correct with respect to the last comment - adding a security exception to Firefox just to circumvent the 'This connection is untrusted' error is What if these connections really aren't secure? Has my computer been hacked? I would be forever grateful if you could help me with this problem. 'This connection is untrusted' error makes me wary about adding an exception. Some of the websites I've visited suggest it is possible to get around the 'This connection is untrusted' errorīy adding security exceptions to Firefox - however, the 'This connection is untrusted' error appears on almostĮvery HTTPS website I visit! Besides that, the fact that I receive a

I have read both your articles on fixing bad security certificates including ' How to Fix: There is a problem with this website's security certificate Error in IE, Edge' and ' How to Fix: Java Expired or not-yet-valid Certificate Error' for hints on how to resolve my issue, but none of these articles apply. SSL SEC_ERROR_INVALID_KEY and SSL_ERROR_BAD_CERT_DOMAIN. Two of the most prominent error messages are: When I see a 'This connection is untrusted' message, I've clicked the 'Technical Details' link to get more information. The next time I visit a secure website at some point in the day. If I shut down and restart the computer the 'This connection is untrusted' error disappears, only to pop up again It seems to work one minute, then it won't work the next. My Outlook email account (), or when I visit other secure websites. For the last few weeks, Firefox randomly produces a ' This connection is untrusted' message whenever I try to sign out of
