Connect it to another Wi-Fi network and see if everything opens seamlessly.Apple’s Safari browser has a built-in security feature that blocks malicious websites, but sometimes content can get through. If option 2 still did not work for you and you don’t want to go deep into certificates and what-not, try isolating the device from the wifi network it has been using. You will be up and running, but still, there is no explanation as to why Safari had worked before and suddenly stopped. Most likely, Safari will instantly connect to the previously forbidden sites. Turn off the Web Shield and see what happens. Usually, Avast is a notorious culprit on this front. If you are not up to the task of fiddling around with certificates it might be a good idea to first check out the antivirus installed on your machine. NOTE: The steps above may slightly vary depending on the type of browser in use (of course, except Safari itself) Possible Cause 3: Antivirus There you go! All the pages you need will be loaded flawlessly on Safari. Why the certificate would be locked to the mail server is as good as anyone’s guess.Ĭhange the authentication of the certificate to “System setting” (Your mail server should be the entry starting with the “ smtp” prefix and ending with a “. Usually, a certificate will be locked on to the mail server and it will prevent any other website from using it. You will realize that the certificate was the problem all along. You have the option of choosing a system setting, always approve or always reject. Double click it and another window will come up. You will find here your certificate and it will have a blue cross marked on it. Then click on system roots for all entries. OR go to Utilities and access Keychain from there. You can do this by clicking CMD + Space Bar then input “Keychain”. The syntax should be something like this: “VeriSign Class 3 Public Primary Certification Authority – G5 certificate” You will be shown the current certificate for the website you opened. Here, also click on the Security tab situated at the right-hand side. On the emerging window, click on the “more information” button. Once open, just next to the URL you will identify a tiny green lock. Open the blocked website (Facebook and Twitter are popular suspects) in another browser e.g. You experience the error in Safari but not in other browsers. Once an issue about encryption is fronted, the first place to seek an explanation is the certificates. Now let’s see if we can sort it out once and for all. That is how the “Safari can’t establish a secure connection to the server” error comes about. So once weak encryptions (or whatever the system presumes to be weak) are met, Safari will not be able to connect. This has especially been emphasized after efforts by OS X Yosemite (Version 10.10.4) and iOS 8.4 were boosted with extra security enhancements. But we all know for our privacy and security, websites have to be coupled with strong encryption before a web connection can be established unconditionally. When weak encryption is detected, Safari is instantly cut off from the connection (it is yet to be determined what detects the weak encryption first between Safari and the Mac system). Click the DNS tab and remove any entries in the left pane, then click the + symbol and add 8.8.8.8 and then click the plus symbol again to add 8.8.4.4. Then click the Network icon and choose Advanced. The possible causes for this bug have been narrowed down to several aspects.Ĭlick the Apple Icon and Choose System Preferences. This error gets you even if you do not use proxy to connect to the net. Clearing cookies, disabling extensions, resetting Safari, turning off Parental Controls, keychain analysis, and permissions reset all hit a brick wall. What is even more puzzling is that the usual related fixes do nothing for the error above. Some websites would open without a fuss on Safari while on others straight up you will get hit by the now famous “Safari can’t establish a secure connection to the server” error. Many Mac users have encountered this strange bug/hitch. It is weird how a browser would work seamlessly, then suddenly decide to choose where and when to function. There have been weird reports on how Safari just stops working (or decides to work selectively) after a given period.
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