It’s the second Tuesday of the month, so Microsoft is pushing out another set of updates. This month there are thirteen updates, addressing about 50 vulnerabilities in Windows, Internet Explorer, .NET, Office, and Silverlight. Three are flagged as Critical.

As always with security updates affecting Windows, you should install these as soon as possible.

Two of the updates (MS15-044 and MS15-049) affect Silverlight. Once you install these updates, your version of Silverlight should be 5.1.40416.0, which you can confirm on the Get Silverlight page. Installing from that page will also update Silverlight to version 5.1.40416.0. That’s also the only way you can get the latest version if you’re using Windows XP.