Why Safari 8 keep not trust youtube and google ? I can access to google.com by any browser except safari 8.

1. From the Safari menu bar, select

Safari ▹ Preferences... ▹ Extensions

Turn all extensions OFF and test. If the problem is resolved, turn extensions back ON and then disable them one or a few at a time until you find the culprit.

2. Select

Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data...

and confirm. Test.

From the menu bar, select

 ▹ System Preferences... ▹ Network ▹ Advanced... ▹ DNS

Under DNS Servers you should have one or more numerical addresses, such as “192.168.1.1” or “10.0.0.1”. What are those addresses?

Back up all data.

Unlock the Network preference pane, if necessary, by clicking the lock icon in the lower left corner and entering your password. Cllck Advanced, open the DNS tab, and change the server addresses to the following:

8.8.8.8

8.8.4.4

That's Google DNS. Click OK, then Apply.

In Safari, select

Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data

and confirm. If you’re using another browser, empty the cache. Test. Any difference?

Notes:

1. If you lose Internet access after making the above change to your network settings, delete the Google servers in the Network preference pane, then select the TCP/IP tab and click Renew DHCP Lease. That should restore the original DNS settings; otherwise restore them yourself. Remember that you must click Apply in order for any changes to take effect.

2. I don't use Google DNS myself, though I have tested it, and I'm not recommending it or any other DNS provider; the server addresses are offered merely for testing purposes. There may be privacy and technical issues involved in using that service, which you should investigate personally before you decide whether to keep the settings. Other public DNS services exist.

Start up in Recovery mode. In the OS X Utilities screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. While in Recovery, you'll have no access to your saved bookmarks or passwords, so make a note of those before you begin, if they're needed for the test.

Test. After testing, restart as usual and post the results.

This could be a complicated problem to solve, as there are several possible causes for it.

Back up all data, then take each of the following steps that you haven't already taken. Stop when the problem is resolved.

Step 1

From the menu bar, select

 ▹ System Preferences... ▹ Date & Time

Select the Time Zone tab in the preference pane that opens and check that the time zone matches your location. Then select the Date & Time tab. Check that the data and time shown (including the year) are correct, and correct them if not.

Check the box marked

Set date and time automatically

if it's not already checked, and select one of the Apple time servers from the menu next to it.

Step 2

Triple-click anywhere in the line below on this page to select it:

/System/Library/Keychains/SystemCACertificates.keychain

Right-click or control-click the highlighted line and select

Services ▹ Show Info

from the contextual menu.* An Info dialog should open. The dialog should show "You can only read" in the Sharing & Permissions section.

Repeat with this line:

/System/Library/Keychains/SystemRootCertificates.keychain

If instead of the Info dialog, you get a message that either file can't be found, reinstall OS X.

*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination command-C. Open a TextEdit window and paste into it by pressing command-V. Select the line you just pasted and continue as above.

Step 3

Launch the Keychain Access application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad and start typing the name.

In the upper left corner of the window, you should see a list headed Keychains. If not, click the button in the lower left corner that looks like a triangle inside a square.

In the Keychains list, there should be items named System and System Roots. If not, select

File ▹ Add Keychain

from the menu bar and add the following items:

/Library/Keychains/System.keychain

/System/Library/Keychains/SystemRootCertificates.keychain

Open the View menu in the menu bar. If one of the items in the menu is

Show Expired Certificates

select it. Otherwise it will show

Hide Expired Certificates

which is what you want.

From the Category list in the lower left corner of the window, select Certificates. Look carefully at the list of certificates in the right side of the window. If any of them has a blue-and-white plus sign or a red "X" in the icon, double-click it. An inspection window will open. Click the disclosure triangle labeled Trust to disclose the trust settings for the certificate. From the menu labeled

Secure Sockets Layer (SSL)

select

no value specified

Close the inspection window. You'll be prompted for your administrator password to update the settings.

Now open the same inspection window again, and select

When using this certificate: Use System Defaults

Save the change in the same way as before.

Revert all the certificates with non-default trust settings. Never again change any of those settings.

Step 4

Select My Certificates from the Category list. From the list of certificates shown, delete any that are marked with a red X as expired or invalid.

Export all remaining certificates, delete them from the keychain, and reimport. For instructions, select

Help ▹ Keychain Access Help

from the menu bar and search for the term "export" in the help window. Export each certificate as an individual file; don't combine them into one big file.

Step 5

From the menu bar, select

Keychain Access ▹ Preferences... ▹ Certificates

There are three menus in the window. Change the selection in the top two to Best attempt, and in the bottom one to CRL.

Step 6

Triple-click anywhere in the line of text below on this page to select it:

/var/db/crls

Copy the selected text to the Clipboard by pressing the key combination command-C. In the Finder, select

Go ▹ Go to Folder...

from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.

A folder named "crls" should open. Move all the files in that folder to the Trash. You’ll be prompted for your administrator login password.

Restart the computer, empty the Trash, and test.

Step 7

Triple-click anywhere in the line below on this page to select it:

open -e /etc/hosts

Copy the selected text to the Clipboard by pressing the key combination command-C.

Launch the built-in Terminal application in the same way you launched Keychain Access.

Paste into the Terminal window by pressing command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting. A TextEdit window should open. At the top of the window, you should see this:

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
fe80::1%lo0 localhost

If that's not what you see, post the contents of the window.

This is crazy. I'm having the same problem (I have another thread about it open) and the amount of work involved to even *potentially* fix the problem is ridiculous.

Safari should not have problems opening the world's most popular search engine. Or any google services. Sometimes it's not even just google for me, though most often it is their websites.

*Very* close to switching back to Chrome. I enjoy Safari 8 and the ecosystem integration, but it's not worth this crap. Would be great if Apple investigated.

bump.