Safari can't open the page because Safari can't establish a secure connection to the server

This also worked for me

this did not help me

I am giving up,

Tried al the above, in user and guest mode. tried new, clean instals.

Nothing works.

In safari, chrome, firefox i can only open sites that start with https.

No blue plus in certifacates.

At this point i am about to go and buy a new computer. this is driving me nuts.

Now i also have the same problem on my iphone5. On my ipad all works good.

what I am finding frustrating is that for me it is intermittent.... I won't be able to connect using Safari, so I switch to Firefox and it will connect. Then I go back to Safari and it will also connect for a while. Then it will stop connecting and I go back to Firefox and it won't connect there either. But if I keep refreshing it eventually connects. And it's only on one machine (mac mini) not on my macbook pro so I don't see why it would be an issue with my internet connection or airport extreme. Very frustrating.

tell me about it. the only device i did not update recently is my ipad. Thats the only thing thats working.

All the rest is only letting me open HTTPS. and it makes no different if its firefox, chrome or safari.

hey there's a safari update today with "improvements to security"... let's hope it helps !

I just read it. Now to find a way to download it. From the app store it wont work 😟

the update didn't help me but the instructions here did seem to help me, so far https://discussions.apple.com/thread/6825338

I have had this problem only when using my ipad at home. We recently switched to Optimum Cablevision. I can bring my ipad to my sisters house and there I do not receive this error. I believe my ipad is incompatible with the new router.

I have this problem that Safari won't open certain https sites citing that a secured connection cannot be established. It frustrated me that I had to use my work issued ThinkPad & MS Windows to enter these sites.

To all readers, I want to first be very clear that I am 100% all-in with Apple having purchased 5 MacBooks, 4 iPads, installed apple wifi time capsule, and numerous iPhones for work, school, and family. What bothers me is that Apple does not have fixes inherent in the software to detect and remedy solutions in the background such as this one.

The user community is a great resource and I appreciate the unselfish sharing of knowledge and experience. While I am not a "super user" I am also not neophyte but the steps cited to fix this issue can be complicated and fraught with data loss risks.

When I have called Apple Support, they are extremely technically competent and customer service oriented so I guess I will be on the phone again!

Check that the date and time is correct on your computer. That happened to me this morning after my MacBook Pro had crashed. I didn't notice but it had reset the date to January and it was 4:45 am, it's October and the time was 8:00 am . Once I changed that it all worked again

I have tried all you have tried and also noticed that certification issue and was wondering. Model: MC954LL/A Version 9.3.5 Wifi is there and is recognized by other computer and cell phones and printer. Did Crash reboot five (5) times in two days with No positive results. Cleared History and Websites and reset network several times Continue to receive: Safari cannot open the page because the server cannot be found, Have taken to restaurants with wifi and connected but still receive same Safari message. Advise?

Thanks so much, this has been bugging me for months on an old machine! 🙂