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It's in the top-right corner of the screen. You can also press ⌘ Command+Space to open Spotlight. Doing so will search your Mac for the Terminal application. It should be the first option at the top of the Spotlight results. sudo killall -HUP mDNSResponder;say DNS cache has been flushed    Then press ⏎ Return. This will run the DNS flush command. It's the password you enter when logging into your Mac. Doing so will complete the DNS flush process. Terminal won't show your keystrokes as you type, but it will record them. You should now be able to connect to any DNS error-locked pages.

Summary:
Open Spotlight . Type terminal into Spotlight. Click Terminal . Type the following code into Terminal: Enter your Mac's password if prompted. Restart your web browser.