Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: .NET Framework Update for AppContext

18 Aug 2017   #1

64-bit Windows 10 Pro
.NET Framework Update for AppContext

A new update for .NET Framework is now available for the AppContext class. The behavior of the AppContext class was recently regressed. The update returns the class to the correct behavior. This update affects the .NET Framework 4.6 and later. The update is not required on Windows 10.

The AppContext class was introduced in the .NET Framework 4.6. It’s primary use is to enable developers to opt into new behavior in the .NET Framework that is not enabled by default. The regression prevents developers from opting into new behavior.

You are only encouraged to install this update if you have used the AppContext class directly and are experiencing problems. Otherwise, you will get this update in one of the regular broader releases over the next one to two months.

Getting the Update

This update is available via the Microsoft Update Catalog.

Downloading KBs from Microsoft Update Catalog

You can download patches from the table below. See .NET Framework Monthly Rollups Explained for an explanation on how to use this table to download patches from Microsoft Update Catalog.

Windows 8.1
Windows RT 8.1
Windows Server 2012 R2
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7Windows Server 2012.NET Framework 4.6, 4.6.1, 4.6.2, 4.7Windows 7
Windows Server 2008 R2 SP1
.NET Framework 4.6, 4.6.1, 4.6.2, 4.7Windows Server 2008 SP2.NET Framework 4.6


My System SpecsSystem Spec

 .NET Framework Update for AppContext

Thread Tools

Similar help and support threads
Thread Forum
Unable to Update Windows, run MSU files, or update .NET Framework
I just did a clean install of Windows 7 Home Premium with SP1. After installing the servicing stack update (KB 3020369) and the convenience rollup (KB 3125574) Windows update searches for updates indefinitely, to no avail. I am unable to run any MSU files to update manually, they get stuck at...
Windows Updates & Activation
update .NET framework?
what is NET framework for?
Windows Updates & Activation
Security update for .NET Framework 3.5.1
This important update (KB2804579)was offered today along with several others. However, I no longer have version 3.5.1, having upgraded to .NET Framework 4.5. Do I need the update for the program no longer on my computer, and, if not, why would it be offered? Thanks for any help!
Windows Updates & Activation
Unable to install Windows Update: Update Kernel-mode driver framework
I am unable to update the Kernel-mode driver framework ver 1.11 for windows 7 for x64-based systems (KB2685811). I get error: 80073712 Also, I am getting BSOD/stop errors in normal mode that say anything from: -memory_management 0x0000000001a, - "A device driver attempting to corrupt the...
Windows Updates & Activation
Do I really need security update for .NET Framework 3.5.1?
Windows Update has been bugging me for some time with two important updates for .NET Framework 3.5.1. Do I really need to install them? I realize this may be a stupid question, since I am not clear on how deeply the .NET Framework has its tendrils in the core operating system. I have NOT...
Windows Updates & Activation

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:21.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App