Click the download/install icon next to the desired extension (e.g., or MCAD CoDesigner ). Restart Altium Designer to finalize the integration. Key Notes:

: Once extracted, you point Altium's preferences to the local unzipped folder. You can then manage extensions through the standard "Extensions and Updates" interface, which will pull data from your local drive instead of the web. Update Limitations

If you can’t simply hit "update" within the software, here is the step-by-step guide to managing an Altium extension offline installation. Phase 1: Preparing the Offline Installation Files

Catechism Book

altium extension offline install