Click the settings icon at the top right corner of your browser (see below). Remove the checkmark from the Block Pop-Up Windows option.

safari

 

To disable popups in the other versions of Safari:

Click the Safari menu at the top left corner of your browser, and choose Preferences.  Click on Security at the top of the window (see below).  Remove the checkmark from the Block pop-up windows option to disable it.

safari pop up


Or for other versions of Safari:

Click the Safari menu at the top left corner of your browser (see below). Remove the checkmark from the Block Pop-Up Windows option.

safari