Navigate to the HTML file you wish to open and double-click it to you that file in your browser. Internet Explorer becomes your default browser when you install Windows.

When you click on this HTML file, it will open with your default browser. The system need not be connected to the internet for the same.

Today’s quick tip explains how to use special web protocols inside hypertext links to force web pages or files to open with particular browsers on Windows or iOS. To see for yourself how to ...

There’s no real risk from granting Safari access to any file. Apple generally tries to restrict what isn’t necessary, and that can sweep in cases like this.