Silverlight is a Microsoft program.

Could you try this page:

http://www.microsoft.com/getsilverlight/get-started/install/default.aspx

The current version is: 5.1.40728.0

If you have that version or older then Silverlight 4.1.10328.0 is rather old as it was released May 8, 2012

https://www.microsoft.com/getsilverlight/locale/en-us/html/Microsoft%20Silverlight%20Release%20History.htm

Silverlight 5 Build 5.1.40728.0 Released August 11, 2015

jscher2000 said

Could you try this page: http://www.microsoft.com/getsilverlight/get-started/install/default.aspx

James said

https://www.microsoft.com/getsilverlight/locale/en-us/html/Microsoft Silverlight Release History.htm

We are sorry, the page you requested cannot be found

FredMcD said

We are sorry, the page you requested cannot be found

You were to quick to respond as I edited link. Plus the link did work if you copy+paste the whole part into Location bar.

This does solve my problem as to how to get the update itself. But and I guess I didn't ask the question actually, why doesn't Mozilla's update page take me to it? Mozilla supposedly accesses the system and suggests what needs to be updated and when you try to follow Mozilla's direction you can't.

Anyway, thank you for the link.