To install the Silverlight plugin on a Mac, follow these steps:
After installation, you may need to configure Silverlight to work with your web browser. Here are the steps for some popular browsers:
CVE records (e.g., CVE-2016-0034, CVE-2015-6165) show Silverlight on macOS was susceptible to:
Silverlight (2007–2021) was Microsoft’s answer to Adobe Flash. It supported .NET-based development, DRM video (PlayReady), and hardware-accelerated graphics. On macOS, Silverlight was available as a Safari and Firefox plugin until Apple and Microsoft phased out NPAPI (Netscape Plugin Application Programming Interface) support.
: Safari (starting with version 12), Chrome, and Firefox have all dropped support for the NPAPI plugins required by Silverlight. How to Uninstall Silverlight
Microsoft Silverlight (old) on MacOs 2026 - Macbook Air M4 chip