Microsoft has released an update to resolve stability issues in the Microsoft .NET Framework 4.5 on Windows 8 Consumer Preview

Install this reliability update to address stability issues in Microsoft .NET Framework 4.5 on Windows 8 Consumer Preview. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article KB2680826 for more information.

After you install this item, you may have to restart your computer.

  Microsoft .NET Framework 4.5 Update for Windows 8 Consumer Preview (KB2680826)