Download Security Update for Microsoft .NET Framework 4.5, .NET Framework 4.5.1, and .NET Framework 4.5.2 on Windows 8, Windows RT 8, and Windows Server 2012 from Official Microsoft Download Center

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Security Update for Microsoft .NET Framework 4.5, .NET Framework 4.5.1, and .NET Framework 4.5.2 on Windows 8, Windows RT 8, and Windows Server 2012

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