2018-12 Security and Quality Rollup for .NET Framework 3.5 SP1, 4.5.2, 4.6 for Windows Server 2008 SP2 (KB4471990)

A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.