Microsoft Knowledge Base Archive

Applies to:

Microsoft .NET Framework 3.5.1

This update for Windows 7 Service Pack 1 (SP1) and Server 2008 R2 Service Pack 1 (SP1) includes cumulative reliability improvements in .NET Framework 3.5.1. 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

If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

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Quality and reliability improvements

CLR¹

Addressed an issue where the Framework would throw an exception is the year in the parsed date is greater or equal the year start the next era. Now, the framework will not throw such exception.
Updated Japanese Era dates that are formatted for the first year in an era and for which the format pattern uses “y年”. The format of the year together with the symbol “元” is supported instead of using year number 1. Also, formatting day numbers that include “元” is supported.
Removed dependency of single quote to output the Gannen character in Japanese Era formatting.
Addressed registry key setting HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\Calendars\Japanese\Eras to support Japanese Era.

¹ Common Language Runtime (CLR)

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Additional information about this update

For more information about this update as it relates to Windows 7 SP1 and Windows Server 2008 R2 SP1, see the following article in the Microsoft Knowledge Base:

4489486 March 2019 Update for .NET Framework 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, and 4.7.2 for Windows 7 SP1 and Server 2008 R2 SP1 (KB 4489486)

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Known Issues

Microsoft is not currently aware of any issues with this update.

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How to obtain and install the update

Microsoft Update Catalog

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

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. Type 4489486 in 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.

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Prerequisites

To apply this update, you must have .NET Framework 3.5.1 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 does not replace a previously released update.

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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.

Windows 7 and Windows Server 2008 R2

Notes

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

ia64 Windows Server 2008 R2

File name	File version	File size	Date	Time	Platform
Big5.nlp	Not applicable	66,728	13-Nov-2018	19:28	Not applicable
Bopomofo.nlp	Not applicable	82,172	13-Nov-2018	19:28	Not applicable
Ksc.nlp	Not applicable	116,756	13-Nov-2018	19:28	Not applicable
Mscorlib.dll	2.0.50727.8805	4,018,176	05-Feb-2019	14:06	IA-64
Normidna.nlp	Not applicable	59,342	13-Nov-2018	19:29	Not applicable
Normnfc.nlp	Not applicable	45,794	13-Nov-2018	19:29	Not applicable
Normnfd.nlp	Not applicable	39,284	13-Nov-2018	19:29	Not applicable
Normnfkc.nlp	Not applicable	66,384	13-Nov-2018	19:29	Not applicable
Normnfkd.nlp	Not applicable	60,294	13-Nov-2018	19:29	Not applicable
Prc.nlp	Not applicable	83,748	13-Nov-2018	19:29	Not applicable
Prcp.nlp	Not applicable	83,748	13-Nov-2018	19:29	Not applicable
Sortkey.nlp	Not applicable	262,148	13-Nov-2018	19:29	Not applicable
Sorttbls.nlp	Not applicable	20,320	13-Nov-2018	19:29	Not applicable
Xjis.nlp	Not applicable	28,288	13-Nov-2018	19:29	Not applicable
Mscordacwks.dll	2.0.50727.8805	3,083,416	05-Feb-2019	14:06	IA-64
Mscorwks.dll	2.0.50727.8805	20,404,888	05-Feb-2019	14:06	IA-64
Sos.dll	2.0.50727.8805	873,624	05-Feb-2019	14:06	IA-64
Big5.nlp	Not applicable	66,728	13-Nov-2018	19:25	Not applicable
Bopomofo.nlp	Not applicable	82,172	13-Nov-2018	19:25	Not applicable
Ksc.nlp	Not applicable	116,756	13-Nov-2018	19:26	Not applicable
Mscorlib.dll	2.0.50727.8805	4,558,848	05-Feb-2019	14:06	x86
Normidna.nlp	Not applicable	59,342	13-Nov-2018	19:27	Not applicable
Normnfc.nlp	Not applicable	45,794	13-Nov-2018	19:27	Not applicable
Normnfd.nlp	Not applicable	39,284	13-Nov-2018	19:27	Not applicable
Normnfkc.nlp	Not applicable	66,384	13-Nov-2018	19:27	Not applicable
Normnfkd.nlp	Not applicable	60,294	13-Nov-2018	19:27	Not applicable
Prc.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Prcp.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Sortkey.nlp	Not applicable	262,148	13-Nov-2018	19:27	Not applicable
Sorttbls.nlp	Not applicable	20,320	13-Nov-2018	19:27	Not applicable
Xjis.nlp	Not applicable	28,288	13-Nov-2018	19:27	Not applicable
Mscordacwks.dll	2.0.50727.8805	990,360	05-Feb-2019	14:06	x86
Mscorwks.dll	2.0.50727.8805	5,947,032	05-Feb-2019	14:06	x86
Sos.dll	2.0.50727.8805	389,784	05-Feb-2019	14:06	x86

x64 Windows 7 and Windows Server 2008 R2

File name	File version	File size	Date	Time	Platform
Big5.nlp	Not applicable	66,728	13-Nov-2018	19:24	Not applicable
Bopomofo.nlp	Not applicable	82,172	13-Nov-2018	19:24	Not applicable
Ksc.nlp	Not applicable	116,756	13-Nov-2018	19:24	Not applicable
Mscorlib.dll	2.0.50727.8805	4,575,232	05-Feb-2019	14:06	x64
Normidna.nlp	Not applicable	59,342	13-Nov-2018	19:25	Not applicable
Normnfc.nlp	Not applicable	45,794	13-Nov-2018	19:25	Not applicable
Normnfd.nlp	Not applicable	39,284	13-Nov-2018	19:25	Not applicable
Normnfkc.nlp	Not applicable	66,384	13-Nov-2018	19:25	Not applicable
Normnfkd.nlp	Not applicable	60,294	13-Nov-2018	19:25	Not applicable
Prc.nlp	Not applicable	83,748	13-Nov-2018	19:25	Not applicable
Prcp.nlp	Not applicable	83,748	13-Nov-2018	19:25	Not applicable
Sortkey.nlp	Not applicable	262,148	13-Nov-2018	19:25	Not applicable
Sorttbls.nlp	Not applicable	20,320	13-Nov-2018	19:25	Not applicable
Xjis.nlp	Not applicable	28,288	13-Nov-2018	19:25	Not applicable
Mscordacwks.dll	2.0.50727.8805	1,757,336	05-Feb-2019	14:06	x64
Mscorwks.dll	2.0.50727.8805	10,007,192	05-Feb-2019	14:06	x64
Sos.dll	2.0.50727.8805	486,040	05-Feb-2019	14:06	x64
Big5.nlp	Not applicable	66,728	13-Nov-2018	19:25	Not applicable
Bopomofo.nlp	Not applicable	82,172	13-Nov-2018	19:25	Not applicable
Ksc.nlp	Not applicable	116,756	13-Nov-2018	19:26	Not applicable
Mscorlib.dll	2.0.50727.8805	4,558,848	05-Feb-2019	14:06	x86
Normidna.nlp	Not applicable	59,342	13-Nov-2018	19:27	Not applicable
Normnfc.nlp	Not applicable	45,794	13-Nov-2018	19:27	Not applicable
Normnfd.nlp	Not applicable	39,284	13-Nov-2018	19:27	Not applicable
Normnfkc.nlp	Not applicable	66,384	13-Nov-2018	19:27	Not applicable
Normnfkd.nlp	Not applicable	60,294	13-Nov-2018	19:27	Not applicable
Prc.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Prcp.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Sortkey.nlp	Not applicable	262,148	13-Nov-2018	19:27	Not applicable
Sorttbls.nlp	Not applicable	20,320	13-Nov-2018	19:27	Not applicable
Xjis.nlp	Not applicable	28,288	13-Nov-2018	19:27	Not applicable
Mscordacwks.dll	2.0.50727.8805	990,360	05-Feb-2019	14:06	x86
Mscorwks.dll	2.0.50727.8805	5,947,032	05-Feb-2019	14:06	x86
Sos.dll	2.0.50727.8805	389,784	05-Feb-2019	14:06	x86

x86 Windows 7

File name	File version	File size	Date	Time	Platform
Big5.nlp	Not applicable	66,728	13-Nov-2018	19:25	Not applicable
Bopomofo.nlp	Not applicable	82,172	13-Nov-2018	19:25	Not applicable
Ksc.nlp	Not applicable	116,756	13-Nov-2018	19:26	Not applicable
Mscorlib.dll	2.0.50727.8805	4,558,848	05-Feb-2019	14:06	x86
Normidna.nlp	Not applicable	59,342	13-Nov-2018	19:27	Not applicable
Normnfc.nlp	Not applicable	45,794	13-Nov-2018	19:27	Not applicable
Normnfd.nlp	Not applicable	39,284	13-Nov-2018	19:27	Not applicable
Normnfkc.nlp	Not applicable	66,384	13-Nov-2018	19:27	Not applicable
Normnfkd.nlp	Not applicable	60,294	13-Nov-2018	19:27	Not applicable
Prc.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Prcp.nlp	Not applicable	83,748	13-Nov-2018	19:27	Not applicable
Sortkey.nlp	Not applicable	262,148	13-Nov-2018	19:27	Not applicable
Sorttbls.nlp	Not applicable	20,320	13-Nov-2018	19:27	Not applicable
Xjis.nlp	Not applicable	28,288	13-Nov-2018	19:27	Not applicable
Mscordacwks.dll	2.0.50727.8805	990,360	05-Feb-2019	14:06	x86
Mscorwks.dll	2.0.50727.8805	5,947,032	05-Feb-2019	14:06	x86
Sos.dll	2.0.50727.8805	389,784	05-Feb-2019	14:06	x86

Additional file information

ia64 Windows Server 2008 R2

File property	Value
File name	Ia64_49edebda559297a148b006b1746795e7_b03f5f7f11d50a3a_6.1.7601.24378_none_6bac8401a5800d36.manifest
File version	Not applicable
File size	908
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	Ia64_4bedd950c10c2b53f3617dbb13010050_b03f5f7f11d50a3a_6.1.7601.24378_none_dd365e2003713545.manifest
File version	Not applicable
File size	916
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	Ia64_93f88d6375ad829a1de3b3b79f2fc61c_b03f5f7f11d50a3a_6.1.7601.24378_none_be4b3dc1fb59a7bf.manifest
File version	Not applicable
File size	918
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	Ia64_a5a40e651c52a56ca91f96612a9d1f29_b77a5c561934e089_6.1.7601.24378_none_454183dcf8318aea.manifest
File version	Not applicable
File size	898
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	Ia64_a938b40f51b9db07db01166d6d62c341_b77a5c561934e089_6.1.7601.24378_none_f483e05390c4912a.manifest
File version	Not applicable
File size	626
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	Ia64_mscorlib_b77a5c561934e089_6.1.7601.24378_none_854ac50b97a157f2.manifest
File version	Not applicable
File size	332,424
Date (UTC)	05-Feb-2019
Time (UTC)	16:16
Platform	Not applicable

File name	Ia64_netfx-mscordacwks_b03f5f7f11d50a3a_6.1.7601.24378_none_e8b5b6dfdd29c84a.manifest
File version	Not applicable
File size	2,689
Date (UTC)	05-Feb-2019
Time (UTC)	16:15
Platform	Not applicable

File name	Ia64_netfx-mscorwks_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_eff193f90528bc77.manifest
File version	Not applicable
File size	6,590
Date (UTC)	05-Feb-2019
Time (UTC)	16:16
Platform	Not applicable

File name	Ia64_netfx-sos_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_d183fea0d11ea45f.manifest
File version	Not applicable
File size	2,009
Date (UTC)	05-Feb-2019
Time (UTC)	16:15
Platform	Not applicable

File name	Msil_mscorlib.resources_b77a5c561934e089_6.1.7601.24378_en-us_4fbd223e8f6d8276.manifest
File version	Not applicable
File size	455
Date (UTC)	05-Feb-2019
Time (UTC)	15:50
Platform	Not applicable

File name	Update.mum
File version	Not applicable
File size	2,189
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_mscorlib_b77a5c561934e089_6.1.7601.24378_none_854ae74997a1200e.manifest
File version	Not applicable
File size	299,131
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-mscordacwks_b03f5f7f11d50a3a_6.1.7601.24378_none_e8b5d91ddd299066.manifest
File version	Not applicable
File size	2,682
Date (UTC)	05-Feb-2019
Time (UTC)	16:29
Platform	Not applicable

File name	X86_netfx-mscorwks_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_eff1b63705288493.manifest
File version	Not applicable
File size	6,587
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-sos_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_d18420ded11e6c7b.manifest
File version	Not applicable
File size	2,006
Date (UTC)	05-Feb-2019
Time (UTC)	16:27
Platform	Not applicable

x64 Windows 7 and Windows Server 2008 R2

File property	Value
File name	Amd64_1d14034c434e3b7d68e0715158f70462_b03f5f7f11d50a3a_6.1.7601.24378_none_2d8666211717c797.manifest
File version	Not applicable
File size	625
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_7ee4df2d94fc311c4f39479b734605f7_b77a5c561934e089_6.1.7601.24378_none_f92d602da9c57753.manifest
File version	Not applicable
File size	620
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_8ad106366f6c3fdf25dec936b251a5ac_b03f5f7f11d50a3a_6.1.7601.24378_none_4785f513ea1ba77c.manifest
File version	Not applicable
File size	627
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_970d3f8ecbc7a485d695e3fa0b0158c1_b03f5f7f11d50a3a_6.1.7601.24378_none_5af07c535e89ea36.manifest
File version	Not applicable
File size	910
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_a938b40f51b9db07db01166d6d62c341_b77a5c561934e089_6.1.7601.24378_none_50a0d7e14923f964.manifest
File version	Not applicable
File size	627
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_c9dccc3ead5c1bc736df7401ab6822c1_b03f5f7f11d50a3a_6.1.7601.24378_none_a2ab475051032d77.manifest
File version	Not applicable
File size	630
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_cd8f842ce61092fd140cfeb7dac871b6_b03f5f7f11d50a3a_6.1.7601.24378_none_95709196cf1f8e81.manifest
File version	Not applicable
File size	623
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_d863ca3dc147eb2a7a1363f1fdab245d_b77a5c561934e089_6.1.7601.24378_none_44d0b2203d06f0cf.manifest
File version	Not applicable
File size	618
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_e6b89b9f55dfed6ac2cf3172f8231055_b77a5c561934e089_6.1.7601.24378_none_af0ef5bc74dd888a.manifest
File version	Not applicable
File size	900
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_e9421752675980378189e2aaf63d1b16_b03f5f7f11d50a3a_6.1.7601.24378_none_ef6954c7c1f7149a.manifest
File version	Not applicable
File size	629
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_ef4eaa54378cac13b9421c4ec786f8d6_b03f5f7f11d50a3a_6.1.7601.24378_none_8b3922bafb4e0c7c.manifest
File version	Not applicable
File size	628
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_f221b1597b1614cbe1611d10646c8788_b03f5f7f11d50a3a_6.1.7601.24378_none_90441e85b3e824a3.manifest
File version	Not applicable
File size	920
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_f94bf0d9e81e95fc067e3f59fdeaa755_b03f5f7f11d50a3a_6.1.7601.24378_none_4f1646f157b37b21.manifest
File version	Not applicable
File size	918
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	Amd64_mscorlib_b77a5c561934e089_6.1.7601.24378_none_3d9db0728324f708.manifest
File version	Not applicable
File size	332,425
Date (UTC)	05-Feb-2019
Time (UTC)	16:37
Platform	Not applicable

File name	Amd64_netfx-mscordacwks_b03f5f7f11d50a3a_6.1.7601.24378_none_a108a246c8ad6760.manifest
File version	Not applicable
File size	2,690
Date (UTC)	05-Feb-2019
Time (UTC)	16:38
Platform	Not applicable

File name	Amd64_netfx-mscorwks_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_a8447f5ff0ac5b8d.manifest
File version	Not applicable
File size	6,591
Date (UTC)	05-Feb-2019
Time (UTC)	16:37
Platform	Not applicable

File name	Amd64_netfx-sos_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_89d6ea07bca24375.manifest
File version	Not applicable
File size	2,010
Date (UTC)	05-Feb-2019
Time (UTC)	16:36
Platform	Not applicable

File name	Msil_mscorlib.resources_b77a5c561934e089_6.1.7601.24378_en-us_4fbd223e8f6d8276.manifest
File version	Not applicable
File size	455
Date (UTC)	05-Feb-2019
Time (UTC)	16:14
Platform	Not applicable

File name	Update.mum
File version	Not applicable
File size	3,167
Date (UTC)	05-Feb-2019
Time (UTC)	21:15
Platform	Not applicable

File name	X86_mscorlib_b77a5c561934e089_6.1.7601.24378_none_854ae74997a1200e.manifest
File version	Not applicable
File size	299,131
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-mscordacwks_b03f5f7f11d50a3a_6.1.7601.24378_none_e8b5d91ddd299066.manifest
File version	Not applicable
File size	2,682
Date (UTC)	05-Feb-2019
Time (UTC)	16:29
Platform	Not applicable

File name	X86_netfx-mscorwks_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_eff1b63705288493.manifest
File version	Not applicable
File size	6,587
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-sos_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_d18420ded11e6c7b.manifest
File version	Not applicable
File size	2,006
Date (UTC)	05-Feb-2019
Time (UTC)	16:27
Platform	Not applicable

x86 Windows 7

File property	Value
File name	Msil_mscorlib.resources_b77a5c561934e089_6.1.7601.24378_en-us_4fbd223e8f6d8276.manifest
File version	Not applicable
File size	455
Date (UTC)	05-Feb-2019
Time (UTC)	16:09
Platform	Not applicable

File name	Update.mum
File version	Not applicable
File size	2,303
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_8ad106366f6c3fdf25dec936b251a5ac_b03f5f7f11d50a3a_6.1.7601.24378_none_eb67599031be3646.manifest
File version	Not applicable
File size	625
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_a938b40f51b9db07db01166d6d62c341_b77a5c561934e089_6.1.7601.24378_none_f4823c5d90c6882e.manifest
File version	Not applicable
File size	625
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_cd8f842ce61092fd140cfeb7dac871b6_b03f5f7f11d50a3a_6.1.7601.24378_none_3951f61316c21d4b.manifest
File version	Not applicable
File size	621
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_d863ca3dc147eb2a7a1363f1fdab245d_b77a5c561934e089_6.1.7601.24378_none_e8b2169c84a97f99.manifest
File version	Not applicable
File size	616
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_ef4eaa54378cac13b9421c4ec786f8d6_b03f5f7f11d50a3a_6.1.7601.24378_none_2f1a873742f09b46.manifest
File version	Not applicable
File size	626
Date (UTC)	05-Feb-2019
Time (UTC)	21:13
Platform	Not applicable

File name	X86_mscorlib_b77a5c561934e089_6.1.7601.24378_none_854ae74997a1200e.manifest
File version	Not applicable
File size	299,131
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-mscordacwks_b03f5f7f11d50a3a_6.1.7601.24378_none_e8b5d91ddd299066.manifest
File version	Not applicable
File size	2,682
Date (UTC)	05-Feb-2019
Time (UTC)	16:29
Platform	Not applicable

File name	X86_netfx-mscorwks_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_eff1b63705288493.manifest
File version	Not applicable
File size	6,587
Date (UTC)	05-Feb-2019
Time (UTC)	16:28
Platform	Not applicable

File name	X86_netfx-sos_dll_b03f5f7f11d50a3a_6.1.7601.24378_none_d18420ded11e6c7b.manifest
File version	Not applicable
File size	2,006
Date (UTC)	05-Feb-2019
Time (UTC)	16:27
Platform	Not applicable

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Help for installing updates: Windows Update FAQ
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Local support according to your country: International Support

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Article ID	:	4488662
Revision	:	9
Created on	:	4/17/2019
Published on	:	4/17/2019
Exists online	:	False
Views	:	285

Microsoft KB Archive Search

Description of the Update for .NET Framework 3.5.1 for Windows 7 SP1 and Server 2008 R2 SP1 (KB 4488662)

Quality and reliability improvements

Additional information about this update

Known Issues

How to obtain and install the update

Microsoft Update Catalog

Windows Software Update Services (WSUS)

Prerequisites

Restart requirement

Update replacement information

File information

How to obtain help and support for this update

Applies to: