Altium Extension Offline Install May 2026

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?

Click the button (the gear icon) in the top right corner. altium extension offline install

A progress bar will appear. Once finished, Altium will prompt you to restart the application to finalize the integration. Troubleshooting Common Issues Even with extensions installed, remember that your Altium

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 Even with extensions installed

Under the section, locate the Offline Installation option. Check the box for Use a local installation service .