How to Install Moonlight (Silverlight) on Ubuntu

Moonlight is an open source implementation of Microsoft Silverlight for Unix systems. With Moonlight you can access videos, applications and content created for Silverlight on Linux.

To install Moonlight plugin, go to

If you can't access above page, try this:


In Ubuntu 12.04 64-bit, Moonlinght plugin for Firefox v12 worked easily just by installing the plugin.

After updated to Firefox v13, Moonlight plugin disabled. I removed and reinstalled the plugin and it start working again. 


By the date 2015, Chromium (and also Google Chrome) will no more supporting NPAPI plugins. That means Moonlight plugin no more works.

In Ubuntu 64-bit, Chromium Moonlight plugin doesn't worked for me. While after I tried something and worked! Here are the steps I followed.

Step 1. I downloaded 64-bit Moonlight plugin for Chromium from
(Note that 64-bit is for me. You may need another)

Step 2. I renamed the downloaded file extension from .crx to .zip and extract the content to Chromium plugin folder which it is /usr/lib/chromium-browser/plugins

If you're using terminal, no need to change the extension. unzip can extract the content of the .crx file directly. 

$ sudo unzip novell-moonlight- -d /usr/lib/chromium-browser/plugins

Step 3. I started Chromium and Moonlight plugin worked for me.

Test If Moonlight / Silverlight Is Installed

Sometimes I am looking for a sample to test if installing success and Silverlight application works.
If you are also in same situation, you can try the silverlight audio player (developed by me) that currently used in the following pages.

Update: 2014/05/22

I realized that Moonlight giving errors when trying to download "Microsoft Media Pack".

I get from another computer and put it in ~/.mozilla/plugins/moonlight/ folder.
Then Google Chrome and Firefox succeed 
to play audio/video using Moonlight. But it's a pitty that I couldn't succeed with Chromium.

Share Share Editor: editor | Posted: 2012/01/16 | Views: 305147


9 + 7 =
editor 07/10/2013 21:36:02
It looks like temporary error. You can try to download the plug-in from
Name 07/10/2013 20:21:40
I got this message when y try to download Moonlight plug in: Forbidden

You don't have permission to access /moonlight/ on this server.
Apache/2.2.22 (Ubuntu) Server at Port 80
Name 11/06/2012 22:55:56
Jazaka Allah khairun.
Lorenzo 09/28/2012 10:46:20
It works! Thanks a lot:)
Name 09/28/2012 01:28:14
Hi Lorenzo,
You can try to right click and save target as the link. So, you can download the file to the Downloads folder.
Lorenzo 09/27/2012 15:03:25
Hi. I downloaded 64-bit Moonlight plugin for Chromium 64 -bit but I can't find it anywhere.Nor in downloaded files neither in the chromium plugin folder...I don't understand:(
m1gin 06/05/2012 15:14:12
Hi kate,

You can run nautilus (a file manager) as root by pressing Alt + F2 and typing following command:

gksudo nautilus

Then copy/extract the files using this instance of file manager.
kate 06/05/2012 14:58:01
I try to do the same on ubuntu 11.10 with chromium, but when i try to extract there is error. " you don't have privileges to extract to the folder plugins. what can i do ?
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