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Windows Update Client for Windows 8.1 and Windows Server 2012 R2: August 2015

This article describes an update that contains some improvements to Windows Update Client in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. This update has a prerequisite.
How to obtain this update
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.

Method 1: Windows Update

This update is available on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center.

Operating systemUpdate
All supported x86-based versions of Windows 8.1DownloadDownload the package now.
All supported x64-based versions of Windows 8.1 DownloadDownload the package now.
All supported x64-based versions of Windows Server 2012 R2DownloadDownload the package now.
Note The update for Windows RT 8.1 can be obtained only from Windows Update.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

Prerequisites

To apply this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

To apply this update, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update replaces July 2015 Windows Update Client update (3065988).

File information

The global version of this 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 8.1 and Windows Server 2012 R2 file information and notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.3.960 0.17xxxWindows RT 8.1, Windows 8.1, and Windows Server 2012 R2RTMGDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for Windows 8.1 and Windows Server 2012 R2 are not listed.
For all supported x86-based versions of Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Wu.upgrade.ps.dll7.9.9600.1772911,77614-Mar-201501:11x86
Wuapi.dll7.9.9600.17959721,92018-Jul-201518:09x86
Wudriver.dll7.9.9600.1795981,92018-Jul-201518:28x86
Wups.dll7.9.9600.1791827,13627-Jun-201502:14x86
Windowsupdate.admlNot applicable36,98015-May-201521:47Not applicable
Windowsupdate.admlNot applicable35,95415-May-201521:47Not applicable
Windowsupdate.admlNot applicable38,25815-May-201521:47Not applicable
Windowsupdate.admlNot applicable64,38015-May-201521:43Not applicable
Windowsupdate.admlNot applicable33,08315-May-201521:02Not applicable
Windowsupdate.admlNot applicable38,42815-May-201521:43Not applicable
Windowsupdate.admlNot applicable37,43115-May-201521:46Not applicable
Windowsupdate.admlNot applicable41,19515-May-201521:46Not applicable
Windowsupdate.admlNot applicable39,97615-May-201521:48Not applicable
Windowsupdate.admlNot applicable38,65815-May-201521:47Not applicable
Windowsupdate.admlNot applicable43,48115-May-201521:48Not applicable
Windowsupdate.admlNot applicable38,30215-May-201521:45Not applicable
Windowsupdate.admlNot applicable34,86415-May-201521:46Not applicable
Windowsupdate.admlNot applicable36,60815-May-201521:50Not applicable
Windowsupdate.admlNot applicable39,59915-May-201521:49Not applicable
Windowsupdate.admlNot applicable38,69515-May-201521:49Not applicable
Windowsupdate.admlNot applicable38,61815-May-201521:49Not applicable
Windowsupdate.admlNot applicable59,98215-May-201521:50Not applicable
Windowsupdate.admlNot applicable35,24615-May-201521:49Not applicable
Windowsupdate.admlNot applicable37,60715-May-201521:50Not applicable
Windowsupdate.admlNot applicable29,86415-May-201521:50Not applicable
Windowsupdate.admlNot applicable30,19015-May-201521:46Not applicable
Windowsupdate.admlNot applicable30,19015-May-201521:45Not applicable
Wuapp.exe7.9.9600.1795929,69618-Jul-201518:29x86
Wuwebv.dll7.9.9600.17959124,92818-Jul-201518:29x86
Windowsupdateclient-core.ptxmlNot applicable11,79121-Aug-201323:40Not applicable
Wuauclt.exe7.9.9600.17959128,56819-Jul-201502:03x86
Wuaueng.dll7.9.9600.179593,065,85618-Jul-201518:37x86
Wups2.dll7.9.9600.1791823,55227-Jun-201502:14x86
Windowsupdate.admxNot applicable24,55301-May-201523:33Not applicable
Wuaext.dll7.9.9600.1740414,84818-Oct-201406:29x86
Wucltux.dll7.9.9600.179592,162,17618-Jul-201518:10x86
Wusettingsprovider.dll7.9.9600.17959334,33618-Jul-201518:27x86
Winsetupui.dll6.3.9600.17918239,10427-Jun-201503:08x86
For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2
File nameFile versionFile sizeDateTimePlatform
Wu.upgrade.ps.dll7.9.9600.1772915,36014-Mar-201501:51x64
Wuapi.dll7.9.9600.17959891,90418-Jul-201518:10x64
Wudriver.dll7.9.9600.1795995,74418-Jul-201518:31x64
Wups.dll7.9.9600.1791866,04827-Jun-201503:08x64
Windowsupdate.admlNot applicable36,98015-May-201522:29Not applicable
Windowsupdate.admlNot applicable35,95415-May-201522:29Not applicable
Windowsupdate.admlNot applicable38,25815-May-201522:29Not applicable
Windowsupdate.admlNot applicable64,38015-May-201522:26Not applicable
Windowsupdate.admlNot applicable33,08315-May-201521:47Not applicable
Windowsupdate.admlNot applicable38,42815-May-201522:27Not applicable
Windowsupdate.admlNot applicable37,43115-May-201522:28Not applicable
Windowsupdate.admlNot applicable41,19515-May-201522:28Not applicable
Windowsupdate.admlNot applicable39,97615-May-201522:26Not applicable
Windowsupdate.admlNot applicable38,65815-May-201522:26Not applicable
Windowsupdate.admlNot applicable43,48115-May-201522:26Not applicable
Windowsupdate.admlNot applicable38,30215-May-201522:27Not applicable
Windowsupdate.admlNot applicable34,86415-May-201522:28Not applicable
Windowsupdate.admlNot applicable36,60815-May-201522:29Not applicable
Windowsupdate.admlNot applicable39,59915-May-201522:29Not applicable
Windowsupdate.admlNot applicable38,69515-May-201522:27Not applicable
Windowsupdate.admlNot applicable38,61815-May-201522:27Not applicable
Windowsupdate.admlNot applicable59,98215-May-201522:26Not applicable
Windowsupdate.admlNot applicable35,24615-May-201522:26Not applicable
Windowsupdate.admlNot applicable37,60715-May-201522:25Not applicable
Windowsupdate.admlNot applicable29,86415-May-201522:25Not applicable
Windowsupdate.admlNot applicable30,19015-May-201522:23Not applicable
Windowsupdate.admlNot applicable30,19015-May-201522:23Not applicable
Wuapp.exe7.9.9600.1795935,84018-Jul-201518:31x64
Wuwebv.dll7.9.9600.17959140,28818-Jul-201518:31x64
Windowsupdateclient-core.ptxmlNot applicable11,79122-Aug-201306:45Not applicable
Wuauclt.exe7.9.9600.17959136,90419-Jul-201501:58x64
Wuaueng.dll7.9.9600.179593,704,32018-Jul-201518:51x64
Wups2.dll7.9.9600.1791852,22427-Jun-201503:08x64
Windowsupdate.admxNot applicable24,55301-May-201523:33Not applicable
Wuaext.dll7.9.9600.1740417,40818-Oct-201406:50x64
Wucltux.dll7.9.9600.179592,228,73618-Jul-201518:12x64
Wusettingsprovider.dll7.9.9600.17959409,08818-Jul-201518:29x64
Winsetupui.dll6.3.9600.17930359,93609-Jul-201518:40x64
Wuapi.dll7.9.9600.17959721,92018-Jul-201518:09x86
Wudriver.dll7.9.9600.1795981,92018-Jul-201518:28x86
Wups.dll7.9.9600.1791827,13627-Jun-201502:14x86
Wuapp.exe7.9.9600.1795929,69618-Jul-201518:29x86
Wuwebv.dll7.9.9600.17959124,92818-Jul-201518:29x86
For all supported Windows RT 8.1
File nameFile versionFile sizeDateTimePlatform
Wu.upgrade.ps.dll7.9.9600.1791812,28827-Jun-201502:04Not applicable
Wuapi.dll7.9.9600.17959679,42418-Jul-201518:09Not applicable
Wudriver.dll7.9.9600.1795979,36018-Jul-201518:31Not applicable
Wups.dll7.9.9600.1791827,13627-Jun-201502:07Not applicable
Windowsupdate.admlNot applicable36,98027-Jun-201503:53Not applicable
Windowsupdate.admlNot applicable35,95427-Jun-201503:52Not applicable
Windowsupdate.admlNot applicable38,25827-Jun-201503:53Not applicable
Windowsupdate.admlNot applicable64,38027-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable33,08327-Jun-201502:40Not applicable
Windowsupdate.admlNot applicable38,42827-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable37,43127-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable41,19527-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable39,97627-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable38,65827-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable43,48127-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable38,30227-Jun-201503:49Not applicable
Windowsupdate.admlNot applicable34,86427-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable36,60827-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable39,59927-Jun-201503:48Not applicable
Windowsupdate.admlNot applicable38,69527-Jun-201503:50Not applicable
Windowsupdate.admlNot applicable38,61827-Jun-201503:50Not applicable
Windowsupdate.admlNot applicable59,98227-Jun-201503:50Not applicable
Windowsupdate.admlNot applicable35,24627-Jun-201503:49Not applicable
Windowsupdate.admlNot applicable37,60727-Jun-201503:44Not applicable
Windowsupdate.admlNot applicable29,86427-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable30,19027-Jun-201503:47Not applicable
Windowsupdate.admlNot applicable30,19027-Jun-201503:47Not applicable
Wuapp.exe7.9.9600.1795929,18418-Jul-201518:31Not applicable
Wuwebv.dll7.9.9600.17959117,76018-Jul-201518:31Not applicable
Windowsupdateclient-core.ptxmlNot applicable11,79121-Aug-201323:34Not applicable
Wuauclt.exe7.9.9600.17959127,09619-Jul-201502:10Not applicable
Wuaueng.dll7.9.9600.179592,665,98418-Jul-201518:31Not applicable
Wups2.dll7.9.9600.1791823,04027-Jun-201502:07Not applicable
Windowsupdate.admxNot applicable24,55326-Jun-201523:21Not applicable
Wuaext.dll7.9.9600.1638415,87222-Aug-201302:14Not applicable
Wucltux.dll7.9.9600.179592,114,56018-Jul-201518:10Not applicable
Wusettingsprovider.dll7.9.9600.17959306,68818-Jul-201518:30Not applicable
Winsetupui.dll6.3.9600.17930306,53609-Jul-201517:14Not applicable
References
Learn about the terminology that Microsoft uses to describe software updates.
Properties

Article ID: 3075853 - Last Review: 09/29/2015 03:04:00 - Revision: 3.0

Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1

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