: Requires manual re-download of large (~3GB) packages for every update. Predictable Installation
A critical note: Some premium extensions (e.g., PDN Analyzer , Signal Integrity ) require separate license activation. An offline extension install does automatically activate the license.
Download the for your specific version of Altium Designer. altium extension offline install
Once the path is set, Altium Designer will read the local folder as its primary source of truth instead of the cloud.
Extract the installer files to a shared network drive or a portable USB. : Requires manual re-download of large (~3GB) packages
Altium Designer’s offline extension installation process is a necessary workaround for users in secure environments, but it is burdened by a file structure that feels outdated and an interface that prioritizes the online "Vault" experience to the detriment of offline users.
But what happens when your design workstation lives on an isolated network? What if you work in a defense lab, a remote field office, or a facility with strict air-gap policies where live internet access is forbidden? Download the for your specific version of Altium Designer
For scripted deployment, Altium supports silent offline extension install via command line:
Input the local URL of your AIS server (e.g., http://your-internal-server-ip:9780 ). Enter the required server credentials if prompted.
This method fails spectacularly in three scenarios:
Click the ellipsis button ... and browse to the folder where you extracted the repository files. Click to save the changes. Step 4: Install the Target Extensions Return to the Extensions and Updates page.