Download Security Update for Microsoft .NET Framework 4.5 Beta on Windows Server 2008 Service Pack 2, Windows 7 Service Pack 1, and Windows Server 2008 R2 Service Pack 1 from Official Microsoft Download Center

A Surface Pro

Surface Pro

The most versatile laptop

Security Update for Microsoft .NET Framework 4.5 Beta on Windows Server 2008 Service Pack 2, Windows 7 Service Pack 1, and Windows Server 2008 R2 Service Pack 1

A security issue has been identified that could allow an unauthenticated remote attacker to compromise your system and gain control over it.