Silverlight not Supported in Safari 12.0

We debated trying to recover back to a pre-update TimeMachine backup, but both of these workstations do other tasks, so the issue was then copying what needs to be kept, etc.

FWIW, i found the SeaMonkey browser (built off of the Mozilla Gecko engine) and it is working far so well.

https://www.seamonkey-project.org/

Other that having to allow it to launch via System Preferences -> Security & Privacy -> General -> "Allow" it is working well with Silverlight.

Hi,

A work around for me - log into https://virgintvgo.virginmedia.com/en/tv/watch-tv.html on Chrome. When you click to watch a channel, it thinks it is a new device, so you have to 'swap' from Safari to Chrome. Works fine now.

Annoying - but at least I can watch Virgin on Mac now.

Hope this works for you.

I have a work-around: Download the free SeaMonkey browser and use it to access sites that use/require Silverlight. I did this today and it works fine.

The version I got is: SeaMonkey 2.49.4 (The SeaMonkey® Project)

The macOS version I am on is: macOS 10.13 (High Sierra)

Hope that helps --

UPDATE: I just realised that the communities page I was looking at did not show me all replies, just the "most helpful" and at on September 18th onc_photo had already suggested this work around! I wish I noticed that earlier as it would have saved me an hour or so... !

I make it work on Mac Mojave

First i uninstall silverlight like is on this site:

Way 1 – Uninstall Silverlight Manually

https://nektony.com/how-to/uninstall-silverlight-on-mac

I did use the app Funter (free)

Then i install silverlight again

And install seamonkey browser (free)

https://www.seamonkey-project.org/

Then i go to finder, applications i click with the right click of the mouse, get info, and select the option app nap.

And it start to work on seamonkey browser

Just confirming this. Apple customer support stated incompatibility as being the problem, and advised using a different browser until Microsoft updates Silverlight.

In firefox 52.0.1 esr works too:

http://ftp.mozilla.org/pub/firefox/releases/52.0.1esr/mac/en-US/

Hi,

I've been facing the same problem. I found a very good browser that is still supports silverlight and found it faster than others till now, It is called Brave and this is its web site:

https://brave.com/

Best regards,

P.s. Don't forget to install silverlight after installing Brave and to restart your Mac Os after it.

I suspect the issue stems from this item that isn't seen unless you expand the Safari 12.0 update in the app store: "Improves security by discontinuing support for most NPAPI plugins". I'd wager that Microsoft Silverlight is an NPAPI plugin which explains why it no longer works.

After a bunch of work in the recovery console I was able to get 11.1.2 back up and running which restored Silverlight. However, I now get a frequent crash popup for "SafariBookmarksSyncAgent" quitting unexpectedly. While annoying, I don't use safari bookmarks, no less require them to be synchronized anywhere so I'll just move that popup window into the bottom corner of my screen and ignore it after each reboot. Super annoying, but at least I got the plugin back for now.

I've also reported this issue and thread to Apple's senior advisors in the hopes they can get some engineering eyeballs on it. However, I suspect they are going to say this is now Microsoft's responsibility to update Silverlight to not be an NPAPI plugin.

Please stop spreading incorrect information. First of all, the latest version of High Sierra is 10.13.6, not 10.13.1. And second of all, Safari version 12.0 has removed support for NPAPI plugins. This means Microsoft Silverlight will not work regardless of what version of macOS you are running so long as you are running Safari version 12.0 or greater.

Again, please stop spreading incorrect information. Safari version 12.0 has removed support for NPAPI plugins. This means Microsoft Silverlight will not work regardless of what version of macOS you are running so long as you are running Safari version 12.0 or greater.

Walkaround for this issue is to use: https://ftp.mozilla.org/pub/firefox/releases/51.0b14/mac/en-US/ instead of Safari 12 on macOS for Silverlight pages. On Firefox version 52+ there is the same issue. Hope it helps 🙂.

Thanks!

FYI: This issue is not "another devious ploy by apple", whatever was meant by that...

Silverlight [and Flash and others] are notoriously easy targets for hackers. They could “allow an attacker to take control of the affected system.” It is a bit annoying that there are still several web sites that use Silverlight, but it is extremely important for your digital well-being to be protected from them.
Making me bring up a different browser, I use SeaMonkey, gives me the chance to double think whether I really trust the site that wants to use it.

I already solved the problem. He is already working well. the solution was to upgrade sierra to high sierra

I'm sure Apple are of the opinion that Safari is fixed, no longer supporting an extension that Microsoft stopped developing over five years ago. Netflix works fine in Chrome.

tt2

I downloaded Seamonkey Browser and all is working fine.