Description of Preview of Quality Rollup for .NET Framework 4.8 for Windows 7 SP1 and Server 2008 R2 SP1 (KB4502568)

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Applies to:

Microsoft .NET Framework 4.8

The June 2019 update for Windows 7 SP1 and Server 2008 R2 SP1 includes cumulative reliability improvements in .NET 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.

Quality and reliability improvements

WPF1

  • Improves the memory allocation and cleanup scheduling behavior of the weak-event pattern. To opt-in to these improvements, set AppContext switches to "true": Switch.MS.Internal.EnableWeakEventMemoryImprovements and Switch.MS.Internal.EnableCleanupSchedulingImprovements.

  • Addresses an InvalidOperationException that can occur during weak-event cleanup, if called re-entrantly while a weak-event delivery is in progress.

ASP.NET

Addresses InvalidOperationException errors in System.Web.Hosting.RecycleLimitMonitor+RecycleLimitMonitorSingleton.AlertProxyMonitors. Worker processes for ASP.Net 4.7 and later are vulnerable to unexpected crashes because of this exception if the worker process consumes close to its configured Private Bytes recycling limit and application domains are being created or recycled (perhaps because of config uration file changes, or the presence of more than one application per worker process).

Workflow

Addresses an issue in which it was possible for a Workflow Service to get into a looping situation if an unhandled exception occurs during Cancel processing. To break this cycle, the Web.config file for the workflow service can have the following AppSetting specified that will cause the workflow service instance to terminate, instead of abort, if an unhandled exception occurs during Cancel processing:

<appSettings>

<add key="microsoft:WorkflowServices:TerminateOnUnhandledExceptionDuringCancel" value="true"/>

</appSettings>


1 Windows Presentation Foundation (WPF)

Additional information about this update

The following articles contain additional information about this update as it relates to individual product versions:

  • 4503865 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 Server 2008 R2 SP1 (KB4503865)

How to obtain and install the update

Method 1: Microsoft Update Catalog

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

Method 2: Windows Software Update Services (WSUS)

On your WSUS server, follow these steps:

  1. Select Start, select Administrative Tools, and then select Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then select Action.

  3. Select Import Updates.

  4. WSUS opens a browser window in which you may be prompted to install an ActiveX control. You must install the ActiveX control to continue.

  5. After the ActiveX control is installed, you see the Microsoft Update Catalog screen. Type 4503865 and then select Search

  6. Locate the .NET Framework packages that match the operating systems, languages, and processors in your environment. Select Add to add them to your basket.

  7. After you select all the packages that you require, select View Basket.

  8. To import the packages to your WSUS server, select Import.

  9. 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 4487256.

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

 

File attributes for all supported x86 based versions of systems

File name

File version

File size

Date

Time

Dhtmlheader.html

Not applicable

16,118

27-Mar-2019

22:19

Header.bmp

Not applicable

7,306

15-May-2018

18:32

Ndp48-kb4502568.msp

Not applicable

19,116,032

17-May-2019

17:35

Parameterinfo.xml

Not applicable

56,732

18-May-2019

01:57

Setup.exe

14.8.3815.0

128,800

15-May-2019

03:10

Setupengine.dll

14.8.3815.0

923,184

15-May-2019

03:10

Setupui.dll

14.8.3815.0

350,496

15-May-2019

03:10

Setupui.xsd

Not applicable

32,572

06-May-2019

06:55

Setuputility.exe

14.8.3815.0

310,416

15-May-2019

03:10

Splashscreen.bmp

Not applicable

196,662

15-May-2018

18:33

Sqmapi.dll

6.2.9200.16384

226,456

04-Apr-2019

03:14

Strings.xml

Not applicable

14,092

15-May-2018

18:33

Uiinfo.xml

Not applicable

36,428

15-May-2018

18:33

Watermark.bmp

Not applicable

110,348

15-May-2018

18:32

Eula.rtf

Not applicable

124,495

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

79,996

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,256

15-May-2019

03:16

Eula.rtf

Not applicable

160,295

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

68,564

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

27,184

15-May-2019

03:16

Eula.rtf

Not applicable

132,348

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,628

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

131,637

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,202

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

111,186

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,944

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

142,041

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

90,134

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,816

15-May-2019

03:16

Eula.rtf

Not applicable

128,314

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

82,766

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,256

15-May-2019

03:16

Eula.rtf

Not applicable

137,247

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,690

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

156,440

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,542

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

146,392

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

78,194

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

29,744

15-May-2019

03:16

Eula.rtf

Not applicable

158,420

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

86,630

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

147,275

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,478

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

155,616

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

74,568

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

28,208

15-May-2019

03:16

Eula.rtf

Not applicable

259,432

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

72,820

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

27,696

15-May-2019

03:16

Eula.rtf

Not applicable

137,812

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,028

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

148,376

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

84,512

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,768

15-May-2019

03:16

Eula.rtf

Not applicable

151,635

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,426

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

137,226

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

84,286

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

188,741

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

86,088

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

149,236

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,212

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

140,171

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,166

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

146,273

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

68,502

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

26,672

15-May-2019

03:16

Eula.rtf

Not applicable

147,662

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,990

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

129,883

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,264

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Print.ico

Not applicable

126,132

04-Apr-2019

03:14

Rotate1.ico

Not applicable

143,901

04-Apr-2019

03:14

Rotate10.ico

Not applicable

143,932

04-Apr-2019

03:14

Rotate2.ico

Not applicable

144,110

04-Apr-2019

03:14

Rotate3.ico

Not applicable

144,151

04-Apr-2019

03:14

Rotate4.ico

Not applicable

144,033

04-Apr-2019

03:14

Rotate5.ico

Not applicable

143,871

04-Apr-2019

03:14

Rotate6.ico

Not applicable

143,881

04-Apr-2019

03:14

Rotate7.ico

Not applicable

144,084

04-Apr-2019

03:14

Rotate8.ico

Not applicable

143,835

04-Apr-2019

03:14

Rotate9.ico

Not applicable

144,064

04-Apr-2019

03:14

Save.ico

Not applicable

126,548

04-Apr-2019

03:14

Setup.ico

Not applicable

126,246

04-Apr-2019

03:14

Stop.ico

Not applicable

190,199

04-Apr-2019

03:14

Sysreqmet.ico

Not applicable

136,313

04-Apr-2019

03:14

Sysreqnotmet.ico

Not applicable

143,990

04-Apr-2019

03:14

Warn.ico

Not applicable

199,341

04-Apr-2019

03:14

File attributes for all supported x64 based versions of systems

File name

File version

File size

Date

Time

Dhtmlheader.html

Not applicable

16,118

27-Mar-2019

22:19

Header.bmp

Not applicable

7,306

15-May-2018

18:32

Ndp48-kb4502568.msp

Not applicable

32,280,576

18-May-2019

00:54

Parameterinfo.xml

Not applicable

56,732

18-May-2019

02:00

Setup.exe

14.8.3815.0

128,800

15-May-2019

03:10

Setupengine.dll

14.8.3815.0

923,184

15-May-2019

03:10

Setupui.dll

14.8.3815.0

350,496

15-May-2019

03:10

Setupui.xsd

Not applicable

32,572

06-May-2019

06:55

Setuputility.exe

14.8.3815.0

310,416

15-May-2019

03:10

Splashscreen.bmp

Not applicable

196,662

15-May-2018

18:33

Sqmapi.dll

6.2.9200.16384

226,456

04-Apr-2019

03:14

Strings.xml

Not applicable

14,092

15-May-2018

18:33

Uiinfo.xml

Not applicable

36,428

15-May-2018

18:33

Watermark.bmp

Not applicable

110,348

15-May-2018

18:32

Eula.rtf

Not applicable

124,495

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

79,996

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,256

15-May-2019

03:16

Eula.rtf

Not applicable

160,295

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

68,564

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

27,184

15-May-2019

03:16

Eula.rtf

Not applicable

132,348

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,628

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

131,637

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,202

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

111,186

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,944

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

142,041

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

90,134

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,816

15-May-2019

03:16

Eula.rtf

Not applicable

128,314

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

82,766

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,256

15-May-2019

03:16

Eula.rtf

Not applicable

137,247

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,690

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

156,440

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,542

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

146,392

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

78,194

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

29,744

15-May-2019

03:16

Eula.rtf

Not applicable

158,420

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

86,630

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

147,275

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,478

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

155,616

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

74,568

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

28,208

15-May-2019

03:16

Eula.rtf

Not applicable

259,432

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

72,820

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

27,696

15-May-2019

03:16

Eula.rtf

Not applicable

137,812

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,028

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

32,304

15-May-2019

03:16

Eula.rtf

Not applicable

148,376

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

84,512

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

30,768

15-May-2019

03:16

Eula.rtf

Not applicable

151,635

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

87,426

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

137,226

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

84,286

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

188,741

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

86,088

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

149,236

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,212

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

140,171

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

83,166

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,280

15-May-2019

03:16

Eula.rtf

Not applicable

146,273

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

68,502

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

26,672

15-May-2019

03:16

Eula.rtf

Not applicable

147,662

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,990

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Eula.rtf

Not applicable

129,883

04-Apr-2019

03:13

Localizeddata.xml

Not applicable

85,264

17-May-2019

17:23

Setupresources.dll

14.8.3815.0

31,792

15-May-2019

03:16

Print.ico

Not applicable

126,132

04-Apr-2019

03:14

Rotate1.ico

Not applicable

143,901

04-Apr-2019

03:14

Rotate10.ico

Not applicable

143,932

04-Apr-2019

03:14

Rotate2.ico

Not applicable

144,110

04-Apr-2019

03:14

Rotate3.ico

Not applicable

144,151

04-Apr-2019

03:14

Rotate4.ico

Not applicable

144,033

04-Apr-2019

03:14

Rotate5.ico

Not applicable

143,871

04-Apr-2019

03:14

Rotate6.ico

Not applicable

143,881

04-Apr-2019

03:14

Rotate7.ico

Not applicable

144,084

04-Apr-2019

03:14

Rotate8.ico

Not applicable

143,835

04-Apr-2019

03:14

Rotate9.ico

Not applicable

144,064

04-Apr-2019

03:14

Save.ico

Not applicable

126,548

04-Apr-2019

03:14

Setup.ico

Not applicable

126,246

04-Apr-2019

03:14

Stop.ico

Not applicable

190,199

04-Apr-2019

03:14

Sysreqmet.ico

Not applicable

136,313

04-Apr-2019

03:14

Sysreqnotmet.ico

Not applicable

143,990

04-Apr-2019

03:14

Warn.ico

Not applicable

199,341

04-Apr-2019

03:14

How to obtain help and support for this update

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