Q: Safari doesn't work but other browsers do

Several things to try ..

Make sure the Firewall is turned off in System Preferences > Security & Privacy > Firewall

Go to Safari > Preferences > Advanced. Click Change Settings to the right of Proxies:

That will open the System Preferences > Network proxies tab. Deselect any checked boxes on the left then click OK.

Try this DNS.

Open System Preferences > Network > Advanced > DNS

Click + and type:

208.67.222.222

Click + again and do the same.

208.67.220.220

Click OK.

Quit and relaunch Safari to test.

Please read this whole message before doing anything.

This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.

Step 1

The purpose of this step is to determine whether the problem is localized to your user account.

Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”

While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.

Test while logged in as Guest. Same problem?

After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.

*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.

Step 2

The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, or by corruption of certain system caches.

Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.

Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models.  The next normal boot may also be somewhat slow.

The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

Test while in safe mode. Same problem?

After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of steps 1 and 2.

Thanks for this try. But no result at all.

Weird thing is that Safari works with my iPhone (bluetooth and 3G) and other Wifi Hot Spots. But not at home! Other devices and laptops work fine at home though.

Any guess?

Thanks, Mike

This has just happened to me too, I tried the help above - but didn't work.

It's look like the main problem is google.. so I can't get to my gmail accounts

It happened also on my macbook pro as on my iMac.

And I don't like working with chrome after I got used to safari. Boo hoo

Help anyone?

Go to terminal and enter these commands one after the other

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

this worked for me.. apparently I had disabled mDNSResponder

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

thank you this worked for me 1/28/16