COMSOL periodically releases product updates with improvements and corrections to reported problems. By default, COMSOL Multiphysics does not check for updates at startup. You can activate this feature in the Updates page of the Preferences window.

The Application Libraries for the COMSOL products are updated on a regular basis by COMSOL. To open the Application Library Update window, from the File > Help menu (Windows users) or from the Help menu (macOS and Linux users), select Update COMSOL Application Libraries.

In a similar way, you can also update the COMSOL Part Libraries. To open the Part Library Update window, from the File > Help menu (Windows users) or from the Help menu (macOS and Linux users), select Update COMSOL Part Libraries.

Using the Preferences window, you can set custom application and documentation directories for Application Library Update, a custom part directory for Part Library Update, and a custom add-in directory for Add-in Library Update. See the COMSOL Multiphysics Reference Manual for more information, including command-line options for the Application Libraries and Part Libraries.