Security and Quality Rollup for .NET Framework 4.8 for Windows 7 SP1 and Windows Server 2008 R2 SP1 (KB4515847)

Applies to:

Microsoft .NET Framework 4.8

The September 24, 2019, update for Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2 SP1 includes cumulative reliability improvements in Microsoft .NET Framework 4.8. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

Important

Starting in August 2019, updates to .NET Framework 4.6 and later for Windows Server 2008 SP2, Windows Server 2008 R2 SP1, and Windows 7 SP1 require SHA-2 code signing support. To avoid installation issues, make sure that you have all the latest Windows updates installed before you apply this update. For more information about SHA-2 code signing support updates, see KB 4474419.

Quality and reliability improvements

BCL¹	Addresses an issue that affects thread contention that occurs in BinaryFormatter.GetTypeInformation by using ConcurrentDictionary to handle multi-thread access.
WPF²	Addresses an issue that affects a WPF ComboBox (or any Selector) within a DataGrid cell that can try to change its selection properties (SelectedIndex, SelectedItem, SelectedValue) when the cell's data item is revirtualized or removed from the underlying collection. This can occur if the Selector's ItemSource property is data bound through the cell's DataContext setting. Depending on the virtualization mode and the bindings that are declared for the selection properties, the symptoms can include unexpected changes (to null) of the data item's properties, and unexpected displays (as null) of other data items that re-use the UI that was previously attached to the revirtualized item. Addresses an issue in which a WPF TextBox or RichTextBox element that has spell checking enabled crashes and returns an "ExecutionEngineException" error in some situations, including inserting text near a hyperlink. Addresses an issue that affects Per-Monitor Aware WPF applications that host System-Aware or Unaware child windows and that run on .NET Framework 4.8. This .NET version occasionally crashes and returns a "System.Collections.Generic.KeyNotFoundException" exception.
CLR³	Addresses an issue that might cause handle leaks to occur in scenarios that repeatedly load and unload Mscoree.dll. Addresses rare cases that incorrectly cause process termination instead of delivering the expected NullReferenceException result.

¹ Base Class Library (BCL)² Windows Presentation Foundation (WPF)³ Common Language Runtime (CLR)

Additional information about this update

The following article contains additional information about this update as it relates to individual product versions.

4516551 Description of the Preview of Quality Rollup for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 7 SP1 and WIndows Server 2008 R2 SP1 and Windows Server 2008 (KB4516551)

How to obtain and install the update

Method 1: Windows Update

This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

Select Start, select Administrative Tools, and then select Microsoft Windows Server Update Services 3.0.
Expand ComputerName, and then select Action.
Select Import Updates.
WSUS opens a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.
After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Enter 4516551 into the Search box, and then select Search.
Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Select Add to add them to your basket.
After you select all the packages that you require, select View Basket.
To import the packages to your WSUS server, select Import.
After the packages are imported, select Close to return to WSUS.

The updates are now available for installation through WSUS.

Prerequisites

To apply this update, you must have .NET Framework 4.8 installed.

Restart requirement

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.

Update replacement information

This update replaces previously released updates 4512193.

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

x86 NDP48

File name	File version	File size	Date	Time	Platform
Dhtmlheader.html	Not applicable	16,118	24-Jul-2019	00:50	Not applicable
Header.bmp	Not applicable	7,306	25-Jun-2019	23:09	Not applicable
Ndp48-kb4515847.msp	Not applicable	20,303,872	08-Aug-2019	03:55	Not applicable
Parameterinfo.xml	Not applicable	60,676	08-Aug-2019	05:22	Not applicable
Setup.exe	14.8.4018.0	129,328	07-Aug-2019	08:03	x86
Setupengine.dll	14.8.4018.0	923,928	07-Aug-2019	08:03	x86
Setupui.dll	14.8.4018.0	351,000	07-Aug-2019	08:03	x86
Setupui.xsd	Not applicable	32,572	26-Jun-2019	22:23	Not applicable
Setuputility.exe	14.8.4018.0	311,368	07-Aug-2019	08:03	x86
Splashscreen.bmp	Not applicable	196,662	25-Jun-2019	23:24	Not applicable
Sqmapi.dll	6.2.9200.16384	226,456	24-Jul-2019	00:49	x86
Strings.xml	Not applicable	14,092	25-Jun-2019	23:24	Not applicable
Uiinfo.xml	Not applicable	36,428	25-Jun-2019	23:24	Not applicable
Watermark.bmp	Not applicable	110,348	25-Jun-2019	23:09	Not applicable
Eula.rtf	Not applicable	124,495	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	79,996	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	30,992	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	160,295	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	68,564	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	27,928	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	132,348	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	85,628	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	131,637	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	83,202	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	111,186	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	87,944	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,040	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	142,041	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	90,134	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,552	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	128,314	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	82,766	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	31,000	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,247	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	83,690	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	156,440	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	87,542	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,040	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	146,392	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	78,194	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	30,480	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	158,420	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	86,630	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,048	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	147,275	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	85,478	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	155,616	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	74,568	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	28,944	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	259,432	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	72,820	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	28,432	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,812	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	85,028	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,048	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	148,376	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	84,512	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	31,504	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	151,635	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	87,426	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,226	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	84,286	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	188,741	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	86,088	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,536	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	149,236	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	83,212	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	140,171	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	83,166	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	146,273	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	68,502	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	27,416	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	147,662	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	85,990	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	129,883	24-Jul-2019	00:45	Not applicable
Localizeddata.xml	Not applicable	85,264	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,536	07-Aug-2019	08:09	x86
Print.ico	Not applicable	126,132	24-Jul-2019	00:50	Not applicable
Rotate1.ico	Not applicable	143,901	24-Jul-2019	00:50	Not applicable
Rotate10.ico	Not applicable	143,932	24-Jul-2019	00:50	Not applicable
Rotate2.ico	Not applicable	144,110	24-Jul-2019	00:50	Not applicable
Rotate3.ico	Not applicable	144,151	24-Jul-2019	00:50	Not applicable
Rotate4.ico	Not applicable	144,033	24-Jul-2019	00:50	Not applicable
Rotate5.ico	Not applicable	143,871	24-Jul-2019	00:50	Not applicable
Rotate6.ico	Not applicable	143,881	24-Jul-2019	00:50	Not applicable
Rotate7.ico	Not applicable	144,084	24-Jul-2019	00:50	Not applicable
Rotate8.ico	Not applicable	143,835	24-Jul-2019	00:50	Not applicable
Rotate9.ico	Not applicable	144,064	24-Jul-2019	00:50	Not applicable
Save.ico	Not applicable	126,548	24-Jul-2019	00:50	Not applicable
Setup.ico	Not applicable	126,246	24-Jul-2019	00:50	Not applicable
Stop.ico	Not applicable	190,199	24-Jul-2019	00:50	Not applicable
Sysreqmet.ico	Not applicable	136,313	24-Jul-2019	00:50	Not applicable
Sysreqnotmet.ico	Not applicable	143,990	24-Jul-2019	00:50	Not applicable
Warn.ico	Not applicable	199,341	24-Jul-2019	00:50	Not applicable

x64 NDP48

File name	File version	File size	Date	Time	Platform
Dhtmlheader.html	Not applicable	16,118	15-Jul-2019	02:09	Not applicable
Header.bmp	Not applicable	7,306	19-Apr-2018	17:11	Not applicable
Ndp48-kb4515847.msp	Not applicable	33,751,040	08-Aug-2019	04:10	Not applicable
Parameterinfo.xml	Not applicable	60,676	08-Aug-2019	05:21	Not applicable
Setup.exe	14.8.4018.0	129,328	07-Aug-2019	08:03	x86
Setupengine.dll	14.8.4018.0	923,928	07-Aug-2019	08:03	x86
Setupui.dll	14.8.4018.0	351,000	07-Aug-2019	08:03	x86
Setupui.xsd	Not applicable	32,572	26-Jun-2019	22:23	Not applicable
Setuputility.exe	14.8.4018.0	311,368	07-Aug-2019	08:03	x86
Splashscreen.bmp	Not applicable	196,662	19-Apr-2018	17:17	Not applicable
Sqmapi.dll	6.2.9200.16384	226,456	15-Jul-2019	02:08	x86
Strings.xml	Not applicable	14,092	19-Apr-2018	17:17	Not applicable
Uiinfo.xml	Not applicable	36,428	19-Apr-2018	17:17	Not applicable
Watermark.bmp	Not applicable	110,348	19-Apr-2018	17:11	Not applicable
Eula.rtf	Not applicable	124,495	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	79,996	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	30,992	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	160,295	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	68,564	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	27,928	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	132,348	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	85,628	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	131,637	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	83,202	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	111,186	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	87,944	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,040	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	142,041	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	90,134	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,552	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	128,314	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	82,766	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	31,000	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,247	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	83,690	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	156,440	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	87,542	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,040	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	146,392	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	78,194	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	30,480	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	158,420	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	86,630	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,048	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	147,275	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	85,478	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	155,616	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	74,568	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	28,944	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	259,432	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	72,820	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	28,432	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,812	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	85,028	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	33,048	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	148,376	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	84,512	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	31,504	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	151,635	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	87,426	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	137,226	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	84,286	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,024	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	188,741	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	86,088	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,536	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	149,236	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	83,212	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	140,171	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	83,166	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,016	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	146,273	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	68,502	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	27,416	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	147,662	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	85,990	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,528	07-Aug-2019	08:09	x86
Eula.rtf	Not applicable	129,883	15-Jul-2019	02:04	Not applicable
Localizeddata.xml	Not applicable	85,264	08-Aug-2019	03:42	Not applicable
Setupresources.dll	14.8.4018.0	32,536	07-Aug-2019	08:09	x86
Print.ico	Not applicable	126,132	15-Jul-2019	02:09	Not applicable
Rotate1.ico	Not applicable	143,901	15-Jul-2019	02:09	Not applicable
Rotate10.ico	Not applicable	143,932	15-Jul-2019	02:09	Not applicable
Rotate2.ico	Not applicable	144,110	15-Jul-2019	02:09	Not applicable
Rotate3.ico	Not applicable	144,151	15-Jul-2019	02:09	Not applicable
Rotate4.ico	Not applicable	144,033	15-Jul-2019	02:09	Not applicable
Rotate5.ico	Not applicable	143,871	15-Jul-2019	02:09	Not applicable
Rotate6.ico	Not applicable	143,881	15-Jul-2019	02:09	Not applicable
Rotate7.ico	Not applicable	144,084	15-Jul-2019	02:09	Not applicable
Rotate8.ico	Not applicable	143,835	15-Jul-2019	02:09	Not applicable
Rotate9.ico	Not applicable	144,064	15-Jul-2019	02:09	Not applicable
Save.ico	Not applicable	126,548	15-Jul-2019	02:09	Not applicable
Setup.ico	Not applicable	126,246	15-Jul-2019	02:09	Not applicable
Stop.ico	Not applicable	190,199	15-Jul-2019	02:09	Not applicable
Sysreqmet.ico	Not applicable	136,313	15-Jul-2019	02:09	Not applicable
Sysreqnotmet.ico	Not applicable	143,990	15-Jul-2019	02:09	Not applicable
Warn.ico	Not applicable	199,341	15-Jul-2019	02:09	Not applicable

How to obtain help and support for this update

Help for installing updates: Windows Update FAQ
Protect yourself online and at home: Windows Security support
Local support according to your country: International Support