An update is available for the .NET Framework 4.5 in Windows 8, Windows RT and Windows Server 2012: May 2013

How to obtain this update

Windows Update

This update is available from Windows Update

Microsoft Download Center

The following file is available for download from the Microsoft Download Center:

Download the package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Restart requirement

You do not have to restart the computer after you apply this update if the affected files are not being used.

Known issue

After you install this update for the .NET Framework 4.5, you might be unable to open or create C++ or JavaScript files or projects. To resolve this issue, install the Visual Studio 2012 update that is described in the Knowledge Base (KB) article 2781514.

File information

The global version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.