Altium Extension Offline Install ((better)) Official

You should now see a list of extensions available from your local source.

Click the button (the gear icon) in the top right corner.

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

Go to (or click the user icon at the top right and select Extensions & Updates).

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 , Manufacturer Part Search , or various simulation tools.

Beyond security, offline installation ensures . By using a local repository, every designer on your team installs the exact same extension version, preventing compatibility issues during complex PCB hand-offs.

If the extension doesn't appear, verify that the offline package version matches your installed Altium Designer build (e.g., AD24 files won't work with AD23).

Extensions often have dependencies. If you manually copied only one folder, the installation might fail. Always copy the full "Repository" structure provided in the offline installer download.

Even with extensions installed, remember that your Altium License must also be handled offline using a .alf license file, as the software cannot "phone home" to the Altium On-Demand license server. Why Install Offline?

Copy the entire installation package (which includes the extensions folder) onto a secure USB drive or a dedicated internal network share that the air-gapped machine can reach. Phase 2: Configuring the Local Installation Service