Additional information about this security update

For more information about this security update as it relates to Windows Server 2012, see the following article in the Microsoft Knowledge Base:

4099638 Security Only update for .NET Framework 3.5 SP1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, and 4.7.1 updates for Windows Server 2012 (KB 4099638)

How to obtain and install the update

Method 1: Microsoft Update Catalog

To get the stand-alone 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. Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services 3.0.

  2. Expand ComputerName, and then click Action.

  3. Click 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 control is installed, you see the Microsoft Update Catalog screen. Enter 4099638 into the Search box, and then click Search.

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

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

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

  9. After the packages are imported, click Close to return to WSUS.

The updates are now available for installation through WSUS.

Update deployment information

For deployment details for this security update, go to the following article in the Microsoft Knowledge Base:

20180508 Security update deployment information: May 8, 2018

Update removal information

Note We do not recommend that you remove any security update. To remove this update, use the Programs and Features item in Control Panel.

Update restart information

This update does not require a system restart after you apply it unless files that are being updated are locked or are being used.

Update replacement information

This update does not replace any previously released update.

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 Server 2012 file information

Note: The MANIFEST files (.manifest) and MUM files (.mum) that are installed are not listed.

File information

File hash information

File name

SHA1 hash

SHA256 hash

Windows8-RT-KB4095518-x64.msu

799BCF96F130656E403E29BB89933DFC8AAE3E5F

0B80CD623965F360E828D4016351B47DA1C8611BAA337B94C146A76BEFDF1999

Windows8-RT-KB4095518-x86.msu

1DD49583AB3F8AA845BF3225024C2CED8078F741

FF9D4797695863497D19459C8F6A763E96B39D1924544376BDFA154EC8D729E3

For all supported x64-based versions

File name

File version

File size

Date

Time

mscorlib.dll

4.0.30319.36440

5,219,984

27-Mar-2018

17:37

normidna.nlp

59,342

15-Nov-2017

00:49

normnfc.nlp

47,076

15-Nov-2017

00:49

normnfd.nlp

40,566

15-Nov-2017

00:49

normnfkc.nlp

67,808

15-Nov-2017

00:49

normnfkd.nlp

61,718

15-Nov-2017

00:49

clrjit.dll

4.0.30319.36440

1,234,568

27-Mar-2018

17:37

clr.dll

4.0.30319.36440

10,070,136

27-Mar-2018

17:37

mscordacwks.dll

4.0.30319.36440

1,731,224

27-Mar-2018

17:37

mscordbi.dll

4.0.30319.36440

1,533,584

27-Mar-2018

17:37

msvcp120_clr0400.dll

12.0.52430.36430

678,568

12-Dec-2017

19:06

msvcr120_clr0400.dll

12.0.52430.36430

869,544

12-Dec-2017

19:06

peverify.dll

4.0.30319.36440

225,936

27-Mar-2018

17:37

sos.dll

4.0.30319.36440

822,904

27-Mar-2018

17:37

system.security.dll

4.0.30319.36440

301,648

27-Mar-2018

17:37

system.security.dll

4.0.30319.36440

301,648

27-Mar-2018

17:37

mscorlib.dll

4.0.30319.36440

5,266,064

27-Mar-2018

17:37

normidna.nlp

59,342

15-Nov-2017

00:50

normnfc.nlp

47,076

15-Nov-2017

00:50

normnfd.nlp

40,566

15-Nov-2017

00:50

normnfkc.nlp

67,808

15-Nov-2017

00:50

normnfkd.nlp

61,718

15-Nov-2017

00:50

clrjit.dll

4.0.30319.36440

509,064

27-Mar-2018

17:37

clr.dll

4.0.30319.36440

6,938,232

27-Mar-2018

17:37

mscordacwks.dll

4.0.30319.36440

1,284,248

27-Mar-2018

17:37

mscordbi.dll

4.0.30319.36440

1,107,600

27-Mar-2018

17:37

msvcp120_clr0400.dll

12.0.52430.36430

536,744

12-Dec-2017

19:05

msvcr120_clr0400.dll

12.0.52430.36430

875,688

12-Dec-2017

19:05

peverify.dll

4.0.30319.36440

163,984

27-Mar-2018

17:37

sos.dll

4.0.30319.36440

762,488

27-Mar-2018

17:37

For all supported x86-based versions

File name

File version

File size

Date

Time

system.security.dll

4.0.30319.36440

301,648

27-Mar-2018

17:37

mscorlib.dll

4.0.30319.36440

5,266,064

27-Mar-2018

17:37

normidna.nlp

59,342

15-Nov-2017

00:50

normnfc.nlp

47,076

15-Nov-2017

00:50

normnfd.nlp

40,566

15-Nov-2017

00:50

normnfkc.nlp

67,808

15-Nov-2017

00:50

normnfkd.nlp

61,718

15-Nov-2017

00:50

clrjit.dll

4.0.30319.36440

509,064

27-Mar-2018

17:37

clr.dll

4.0.30319.36440

6,938,232

27-Mar-2018

17:37

mscordacwks.dll

4.0.30319.36440

1,284,248

27-Mar-2018

17:37

mscordbi.dll

4.0.30319.36440

1,107,600

27-Mar-2018

17:37

msvcp120_clr0400.dll

12.0.52430.36430

536,744

12-Dec-2017

19:05

msvcr120_clr0400.dll

12.0.52430.36430

875,688

12-Dec-2017

19:05

peverify.dll

4.0.30319.36440

163,984

27-Mar-2018

17:37

sos.dll

4.0.30319.36440

762,488

27-Mar-2018

17:37

How to obtain help and support for this security update

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