.NET Framework October 2017 Preview of Quality Rollup



Today, we are releasing the October 2017 Preview of Quality Rollup. This type of rollup is intended for businesses that want to the preview or use quality improvements as soon as they are available.

Quality and Reliability

This release contains the following quality and reliability improvements.


  • Code optimization bug for x64 C# code targeting .NET Framework 4.6.1 and running on .NET Framework 4.7. [484415]


  • WPF touch stops working after many touch events due to reference counting issue. [460192]
  • WPF touch generates a NullReferenceException in System.Windows.Input.StylusWisp.WispLogic.ProcessInputReport with .NET Framework 4.7. [480909]
  • WPF crash caused by INVALID_POINTER_WRITE_c0000005_PenIMC_v0400.dll!CPimcContext::GetPenEventMultiple. [488390]

Note: Additional information on these improvements is not available. The VSTS bug number provided with each improvement is a unique ID that you can give Microsoft Customer Support, include in StackOverflow commentsor use in web searches.

Getting the Update

The Preview of Quality Rollup is available via Windows Update, Windows Server Update Services, Microsoft Update Catalog, and Docker.

Microsoft Update Catalog

You can get the update via the Microsoft Update Catalog. For Windows 10, .NET Framework updates are part of the Windows 10 Monthly Rollup.

Product VersionSecurity and Quality Rollup KB
Windows 10 1607 (Anniversary Update)Catalog 4041688
.NET Framework 4.74041688
.NET Framework 4.6.24041688
.NET Framework 4.6.14041688
.NET Framework 4.64041688
Windows 8.1 Windows RT 8.1 Windows Server 2012 R2Catalog 4042078
.NET Framework 4.6, 4.6.1, 4.6.2, 4.74041777
.NET Framework 4.5, 4.5.1, 4.5.24040974
.NET Framework 3.5.14040981
Windows Server 2012Catalog 4042077
.NET Framework 4.6, 4.6.1, 4.6.2, 4.74041776
.NET Framework 4.5.24040975
.NET Framework 3.54040979
Windows 7 Windows Server 2008 R2Catalog 4042076
.NET Framework 4.6, 4.6.1, 4.6.2, 4.74041778
.NET Framework 4.5.24040977
.NET Framework 3.5.14040980
Windows Server 2008Catalog 4042201
.NET Framework 4.64041778
.NET Framework 4.5.24040977
.NET Framework 2.04040978

Previous Monthly Rollups

The last few .NET Framework Monthly updates are listed below for your convenience:


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