Webengine4.dll – Revision History for Microsoft .NET Framework 4.5

03-Oct-2012 – 4.0.30319.19030 – Webengine4.dll – http://support.microsoft.com/kb/2765317 – FIX: A hotfix is available for the .NET Framework 4.5 that resolves an ASP.NET race condition issue in Windows 8, Windows RT, and Windows Server 2012