CSS HTML Validator features two update checking mechanisms.

Method 1: Manual (Standard) Method

You can perform a standard update check by choosing Help->Check for Updates. CSS HTML Validator will contact the server and display a dialog that will let you know whether you're using the latest version.

Periodically, you may also be asked (reminded) to check for a new version at startup. You can disable this question in the Startup Page of the Editor Options.

Method 2: 'Quick' Update Check

The "quick update check" method automatically displays a short message in the status bar at program startup, every x number of days, with the default being every 7 days. In addition, for more important update messages, the message may appear in a dialog box and the computer may beep.

hmtoggle_plus1Advanced 'quick' update check configuration