safari can't establish a secure connection

Safari can't Establish a secure connection😟

This might fix it.

I ended up installing fresh OS X.

Turns out it was my mac antivirus that was causing the "Safari can't Establish a secure connection". All website are working after i disable the Web Shield in my antivirus setting.

I had the same problem both on Safari and Firefox. I disabled "Web Shield" in my Avast anti-virus program, and now it works fine.

What I don't understand is, why it started creating this problem all of a sudden ? I have had Avast installed for weeks and was able

to go to any website.

I've been having the same problem of not being able to connect to some websites (Google, Facebook, Apple, and a few others) while I could connect flawlessly to others... No matter what Browser I tried I would get the same results.. I scoured every forum that I could find (or connect to, really. lmao) but I could never find any solution. Any suggestions I read were useless or didn't pertain to the original problem.. But then I saw this, and checked my Avast settings to try to turn off the Web Shield. Sure enough, after closing out of all browsers, re-booting Safari, and testing out all sites I couldn't connect to.. They worked! all of them.

TL:DR; Check your Anti-virus setup for any sort of 'Web-Shielding' and try turning it off.

No guarantee, but post your results so we can all get an idea if this is truly a simple solution..

Avast causes problems. I suggest you remove it.

Avast

Avast Un-install

That's what I'm noticing, unfortunately.. I've only just recently switch from Windows to Mac OS, and I never had problems on any of my previous computers with Avast. Do you have any recommendations for an anti-virus system that's good for Mac that I can use in place of Avast? I'd hate to run into this problem again lol

I had the same problem last night on my daughter's Mac. Everything worked fine when I disabled web shield. Of course that cannot be the long term answer. I then decided to turn web shield back on and uncheck the IPv6 box on web shield and everything started working again. The website I was having a problem with was xfinity.com and I am on an xfinity network using their router. Maybe something has changed in how they doing IPv6?

You really don't need an anti-virus program on a Mac. This one is one that operates fairly well with Macs.

ClamXav

Thanks the web shield was the issue. I disabled it and now everything works!!!

i just disabled the avast web shield and everything is fine now ! thanks !

Stay safe - avoid completely disabling your antivirus applications and/or the web shield features. Make the smallest changes first, then turn things off only if absolutely necessary.

Instead, check your AV app for a place/way to specify safe sites. In my case, I could not get to a banking site. I suspect the problem is that they are using SSL, not TLS for securing their server, but regardless, here is the step I took that fixed my problem (had the same error about Safari can't establish a secure connection):

1. Open the AV app
2. Look for settings or preferences (Avast: Preferences)
3. Locate the web configuration section (Avast: Web Shield)
4. Locate the configuration change feature (Avast: Settings)
5. Locate the add trusted site feature (Avast: "+" symbol)
6. Type the server name; for example, "www.news.com", or "www.appleheadaches.com", or "geewhiz.org".
7. Select whether it's a regular http site or a secure https site. Hint: if it's causing headaches, it's probably an https site.
8. Save the new site (Avast: click the Add button).
9. Profit!!!

That fixed my problem in seconds. I no longer get the Safari connection error; I get to the site I was trying to load in the first place.

And my security controls are still in place, keeping my a$$ out of trouble!

Hope this helps!

You may want to turn your web shield back on, but add the site you're having trouble with to the trusted sites. Obviously, make sure you trust the site! ;-) See my longer answer in this thread from today.

Be safe - see my longer answer in this thread from today.

This might be solve the issue of connecting to those websites, but there might be another problem underlying that we are just masking it with this method.

I had the Avast in place with webshield with no problem connecting to those websites. I then connected to an unsecured wifi network and after that I experienced the same problem. I can get around the problem by disabling the webshield on Avast. But I am afraid there is still some spyware hanging around stealing the information I am exchanging with those websites.

It became more of a concern when I installed AVG Antivirus and there is that same problem with the webshield. Enabling it causes the problem and disabling it gives the same type of error.

Any ideas?

Uninstall all your anti-virus software using the developer's uninstall instructions. The software isn't needed on a Mac and often hurts the computer's performance.

Avast

Avast Un-install

AVG Uninstall

Had one website that I could not connect to. Tried using Safari, Chrome and Firefox. Nothing worked. The technical people at the website could not figure it out. I also have Avast antivirus and when I disabled the Web Shield I could get into the site. Thanks for your post.