Proceed with the installation. The installer will retrieve the necessary files from the unzipped offline content rather than the cloud. Troubleshooting Offline Installs
Before clicking "Apply Changes", navigate to Altium’s temporary download cache directory, typically located at: C:\ProgramData\Altium\Altium Designer Your-Version-GUID\Extensions\
Transfer the package to the offline machine.
| Issue | Solution | |-------|----------| | | Ensure both online and offline PCs run the exact same Altium update (e.g., 24.5.1 vs 24.6.0 will fail). | | Missing dependencies | Download all related extensions (e.g., if you install Simulation , also get Simulation Models ). Use Export with Dependencies if available. | | License validation fails | Some extensions require an active license check. Use a Private License Server (Altium Concord Pro / Infrastructure Server) for offline validation. | | No "Export Offline" button | You are likely using an older version (<20). Use Method 2 (manual copy) instead. | altium extension offline install
The first step is to acquire the installer for the specific extension you need. For third-party extensions, the provider will typically give you a .DXP file. For official Altium extensions, you or your IT admin would download it from the Altium Downloads page or via the Altium account portal on a machine that does have internet access.
Click , let the progress bar finish, and restart the software. Troubleshooting Common Offline Installation Issues Error: "Cannot connect to repository"
This comprehensive guide covers how to set up, download, and install Altium Designer extensions completely offline. Understanding Altium Extension Architecture Proceed with the installation
: Copy the relevant folder to the same directory on the offline machine.
This tab will now list extensions found in your local repository.
Once you have downloaded the ZIP file (from a machine with internet access): | Issue | Solution | |-------|----------| | |
Restart Altium Designer.
With the local path set, you can now manage extensions without an active internet connection.
