From Nov 20 to Nov 26 , the following hot-fix KBs were released:

Microsoft .NET Framework 4.5

  • 2756203 Hotfix rollup 2756203 is available for the .NET Framework 4.5 in Windows Vista SP2, Windows Server 2008 SP2, Windows 7, Windows 7 SP1, Windows Server 2008 R2, and Windows Server 2008 R2 SP1
  • 2769674  Hotfix rollup 2769674 is available for the .NET Framework 4.5 in Windows 8 and Windows Server 2012