Once you have the legitimate installer, follow these steps:

Security and legal guidance

Altium Designer is proprietary software. You need a valid license from Altium to use it legally. This post is for informational purposes only. For a trial, visit the official Altium website. If you have a licensed installer, you can use this build number to stay on a legacy version.

While you can find an , ask yourself if you should . Here is a comparison with modern Altium (v24/v25):

Altium Designer v16.0.5 Build 271, released in late 2015, is a legacy version of the professional PCB design software suite. This specific build was an early maintenance update within the Altium 16 release cycle, which introduced features focused on accelerating PCB design workflows through automation wizards and enhanced productivity tools. Key Features of v16.0.5

Altium does not host v16 on its public page anymore. Only active subscribers can access legacy builds via the Altium Customer Portal.

Real-time visual feedback that displays clearance boundaries between objects as you route, helping you understand the impact of routing decisions on the fly.