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Chrome, Chromium, Firefox - all of the browsers are not allowing me to open websites which are marked unsecure in chrome. The only pages they open are those with green lock and Secure.

As this problem appears in all of the browsers I can assume that the problem is in system settings. I've just started using Ubuntu in dualboot from yesterday, before that I was using Ubuntu from VM and never faced this problem. Any help is appreciated.

Working sites:

Not working:

Roman Frolov
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  • This is not about Ubuntu. The problem is rather the webpages. Usually this happens if you open a https page which doesn't have a valid certificade. In any of the browser you mentioned there is an option (firefox e.g. on the bottom of the page -> advanced) to add an "unsave" page as exception. – derHugo Jan 04 '18 at 12:22
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    What sort of internet connection are you using ? By "marked unsecure", you mean web addresses which begin with http:// - ones which begin with https:// all work ? I assume these websites work correctly in Windows ? – Jonas Czech Jan 04 '18 at 13:27
  • @JonasCz I am using DSL connection. No, chrome marks both http:// and https:// as unsecure. Yes, all of these websites work correctly in windows chrome or ios safari. – Roman Frolov Jan 04 '18 at 13:31
  • @DavidFoerster thank you for comment, I've added the list to my question. – Roman Frolov Jan 05 '18 at 12:41
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    Possible duplicate of How do I install a root certificate? – Elder Geek Jan 05 '18 at 14:52
  • @ElderGeek if this is a duplicate, can you please explain what is the problem in my case? – Roman Frolov Jan 05 '18 at 16:26
  • See @derHugo comment here Here's another related post: https://askubuntu.com/questions/894475/does-ubuntu-update-its-root-certificate-authority-list-automatically – Elder Geek Jan 05 '18 at 17:22

1 Answers1

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Easy solution

The solution in my case was just to switch from 16.04 to 17.10, all the issues are gone.

Less easy solution

If you are more experienced with ubuntu than I am, you can try to read comment section below the question post. The problem is related to site certificates.
Here are two questions which can help you to resolve this problem (thanks to Elder Geek):

Roman Frolov
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