Extension Offline Install: Altium

How to Perform an Altium Extension Offline Installation In many professional environments—especially those involving high-security government contracts, aerospace, or defense—workstations are kept strictly offline (air-gapped) to prevent data leaks. This poses a challenge when you need to install essential Altium Designer extensions like the MCAD Co-Designer, Manufacturer Part Search, or various simulation tools.

Most users interact with the "Extensions and Updates" view, a friendly GUI that lists available updates with shiny green download arrows. But behind that GUI is a robust file system that doesn't actually care if the internet exists. It only cares about the file format. altium extension offline install

Obtain Extension IDs from Altium’s official extensions catalog or a reference installation. How to Perform an Altium Extension Offline Installation

: Upon importing the pack on an offline machine, Altium performs a local checksum and digital signature validation to ensure the extension wasn't corrupted or tampered with during the transfer (crucial for high-security defense or aerospace sectors). Version Rollback Points But behind that GUI is a robust file

Sign In: Go to the Altium Downloads page and sign into your Altium account.

Open Altium Designer and go to DXP (or the user icon) > Preferences. Navigate to System > Installation. Select the radio button for Offline installation.