Safari can't establish a secure connection to the server www.google.com

From your Safari menu bar click Safari > Preferences then select the Privacy tab.

Click: Remove All Website Data

Then delete the cache.

Open a Finder window. From the Finder menu bar click Go > Go to Folder

Type or copy paste the following

~/Library/Caches/com.apple.Safari/Cache.db

Click Go then move the Cache.db file to the Trash.

Quit and relaunch Safari to test.

If nothing above helped, troubleshoot Safari extensions.

From the Safari menu bar click Safari > Preferences then select the Extensions tab. Turn that OFF, quit and relaunch Safari to test.

If that helped, turn one extension on then quit and relaunch Safari to test until you find the incompatible extension then click uninstall.

I tried all of the above as well including your suggestions.

The problem still persists.

I would really love to find a solution as I can't access paypal, twitter and some others. However, not all https site are unavailable. Facebook, my bank etc works fine... No problems what so ever in firefox or chrome.

Any suggestions?

I am having the same problem with Facebook and a few other sites. The problem only has happened since I updated to Yosemite. (I also have problems viewing some images on Facebook and on my own blog - I get question marks instead of the images.) Is this a bug related to Yosemite, and will there be a fix? (I tried Dr. Koch's solution, but it didn't work.)

Check out my blog for a fix

Hi again. Last evening I actually managed to solve my problem which was due to a locked certificate. Check it out if it helps you as well.

Best wishes,

Lars