Quality and reliability improvementsADO.NET issue resolved
Exceptions may be thrown in SqlClient during the prelogin handshake process or during MARS communication when a received TDS packet size is smaller than expected. Prelogin handshake errors will manifest as an OverflowException, and MARS errors will manifest as a generic "Physical connection is not usable" exception.
Note This update also contains cumulative updates that were released previously starting from October 11, 2016.
CLR issue resolvedWhen an application uses unaligned block initialization, for example, from managed C++, the code generated on AVX2 hardware has an error. As a result, if the JIT uses a register other than xmm0 for the source, an incorrect encoding will be used.
WPF issue resolvedAssume that a Windows Presentation Foundation (WPF) application includes a D3DImage control. You start the application, change both the size and the content of the image, and then run the image with software rendering. For example, you run the application through Remote Desktop. In this situation, memory leak occurs.
How to get this update
Method 1:This update is available from Windows Update, as an Optional update.
Method 2:To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
PrerequisitesTo apply this update, you must have the .NET Framework 4.6 or 4.6.1 installed, as appropriate.
Restart requirementYou have to restart the computer after you apply this update if any affected files are being used. We recommend that you close all .NET Framework-based applications before you apply this update.
Applies toThis article applies to the following operating systems:
- Windows 8.1
- Windows Server 2012 R2
- the .NET Framework 4.6
- the .NET Framework 4.6.1