Created 10/25/2012
Last Reviewed 3/16/2016
Versions 6.1, 7.0

Issue

If Silverlight for Mac OS X is not updated, Firefox may block it.  When this happens, Silverlight cannot run again unless it is manually enabled.  It may even be necessary to manually enable Silverlight after updating it to the current version.

Solution

To resolve this, navigate to the Firefox Add-ons Manager and click the Enable button next to Microsoft Silverlight.

Additional Comments

If Firefox is disabled it is possible to get stuck in a loop where you will be prompted to install Silverlight, which will install successfully, and then you will again be prompted to install it because it is disabled and therefore not available to the browser.

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