Extension Offline Install — Altium

The offline installation of Altium extensions is a classic case of "it works, but you have to know the trick." For a single user installing a niche translator, the process is manageable. For an IT administrator trying to deploy a standardized installation across an air-gapped company, the process is unnecessarily arduous due to the difficulty of obtaining the installation files and the fragility of the local installation pointers.

Rating: 5/10 It gets the job done, but it requires significant user intervention and knowledge that should be documented better by the vendor.

To install Altium Designer extensions offline, you must first obtain the official Offline Installation Package

, which includes the software and its associated extensions. 1. Request the Offline Installer

The offline package is not immediately available for direct download; you must request it through your Altium account. Log in to the Altium Downloads page with your AltiumLive credentials. Locate the "Need Offline Installer?" link under the standard download options.

Follow the prompts to submit a request. Once approved, the link on the downloads page will transform into a ZIP file download link altium extension offline install

If the link doesn't change immediately, try signing out and back into your account. 2. Prepare the Installation Source

Once you have downloaded the ZIP file (from a machine with internet access):

Transfer the ZIP file to the offline production computer using external media (e.g., a USB drive). the contents to a local directory on that computer. 3. Configure Altium Designer for Offline Mode

You must tell Altium Designer to look at your local folder instead of the Altium Cloud for new extensions. Open Altium Designer and navigate to DXP > Preferences (or click the gear icon). System > Installation Local Installation Source section, select the radio button for "Offline installation" Use the browse button (

) to select the folder where you unzipped the offline installation package. to save the changes. 4. Install Extensions The offline installation of Altium extensions is a

With the source redirected, you can now manage extensions locally:

Most official Altium extensions support offline installation, including:

Third-party extensions from the Altium Marketplace may have additional licensing requirements – verify offline support with the vendor.

  • Transfer the package to the offline machine.

  • Close Altium Designer completely on the offline machine. Third-party extensions from the Altium Marketplace may have

  • Place the extension file in a known folder (e.g., C:\AltiumExtensions) and note the path.

  • Install using Altium’s Extensions & Updates dialog:

    If your Altium version lacks a GUI install for local packages:

  • Apply license or activation if required.

  • Restart Altium Designer.

    • Stuck without internet but need that Altium extension now? No panic. Here’s a crisp, hands-on guide that gets you from “download” to “designing” with minimal fuss — plus a few tips to avoid hiccups.