After installation, you can launch Silverlight by clicking on the Silverlight icon in your computer’s start menu. To launch Silverlight, you need to install Microsoft Silverlight. In IE mode, you can use any document and enterprise mode, as well as Active X controls (such as Java or Silverlight), as well as a variety of other features. After installation, quit and relaunch your browser. Enter your Mac user password, if prompted, then click Allow.

In the Silverlight Installer window, click Install. If you see a warning that Silverlight.pkg can’t be opened because it is from an unidentified developer, hold down the Control key, click the file, then click Open. Press and hold the Control key, then click the Silverlight.dmg file. Here’s how: If you see the error message “Silverlight.dmg cannot be opened because it is from an unidentified developer,” you can resolve this error by changes these settings: In the Finder, locate the downloaded Silverlight.dmg file. You can download it from Mozilla's release repository.įirefox 52 ESR has been replaced with Firefox 60 ESR, but its latest version is somewhat recent, released on June 25 2018.Īs explained above, neither Safari 12, Chrome version 45 or later nor Firefox 52 or later support NPAPI plugins, with the exception of Adobe Flash.If you’re trying to watch a movie or TV show on Netflix, and you see the error message “Silverlight.dmg cannot be opened because it is from an unidentified developer,” you can resolve this error by changing your Mac security preferences. If you insist on using Silverlight on macOS, I think your 'safest' bet would be Firefox 52 ESR for that specific sports site. This means that you must use an unsupported browser, with all the risks that entails.

The culprit is the technology the plugin is based on: NPAPI, which has been deprecated in all major browsers because of security concerns, the latest of them being Safari with version 12. No, there is no way to make the current version of the Silverlight plugin work with Safari 12.Īs of today, no actively supported web browser on macOS can run the current Silverlight plugin (neither Safari, Chrome nor Firefox, see below for more information).

Is there any way to enable the Silverlight Plug-In in Safari 12?

How to allow silverlight on mac