We had the same issue and we learn that google is opting out from silverlight and they are disabled the silverlight plugin support in chrome.
Their is still a workaround which you can use till end of 2015.to enable the silverlight in chrome follow these instructions:
- install the Silverlight component on PC.
- Enter
chrome://flags/#enable-npapi
into your Chrome address bar.
- find NPAPI Mac, Windows on the page(1st one) and Click Enable.
- at the end of page click Relaunch Now to activate the changes.
After this you may see the permission error.
- Click on the puzzle piece at the far right of the address bar.
- Select Always allow plug-ins on content.testout.com and click Done.
Alternate is, you can use IE or Firefox for permanent Solution.
KBA-098 - Silverlight Plugin Blocked in Chrome Browser