The Microsoft .NET Framework 4.5.1 Hotfix Rollup KB2909239 (Offline Installer) is now available for the .NET Framework 4, the .NET Framework 4.5, and the .NET Framework 4.5.1. This offline installer applies to Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2.
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