If you're experiencing an inability to load specific Web pages in Safari either by clicking links or accessing URLs directly -- particularly if they're all from the same site -- resetting certain ...

Mac 911 Can’t open HTML pages in Safari? Add Safari to Full Disk Access This problem can occur after a macOS update.

Launch Mozilla Firefox and navigate to the Web page that contains the links you want to open in new tabs. Hold down "Ctrl" and click a link to open it in a new tab.