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Incorrect log in Event Viewer after you install an antivirus software in Windows 8.1

This article describes an issue that occurs after you install an antivirus software in Windows 8.1 or Windows RT 8.1. An update is available to fix this issue. Before you install this update, see the Prerequisites section.
Symptoms
On a computer that has an antivirus software installed, the following information is logged frequently in Event Viewer:

Windows Security Center can't stop Windows Defender


How to get 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 provided as a Recommended update on Windows Update. For more information on 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.
Note The update for Windows RT 8.1 can be got only from Windows Update.

For more information about how to download Microsoft support files, select 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 install this update, install April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) in Windows 8.1. 

Registry information

To apply this update, you don't 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 doesn't replace a previously released update.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
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 times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.

Windows 8.1 and Windows RT 8.1

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 0.16 xxxWindows RT 8.1 RTMGDR
    6.3.960 0.17 xxxWindows 8.1 RTMGDR
    6.3.960 0.18 xxxWindows RT 8.1 and Windows 8.1 RTMGDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.
  • 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.
Windows RT 8.1
File nameFile versionFile sizeDateTimePlatform
Wscapi.dll6.3.9600.18189140,00006-Jan-201623:56Not applicable
Wscenter.mofNot applicable5,55221-Aug-201323:38Not applicable
Wscisvif.dll6.3.9600.1638420,48022-Aug-201303:04Not applicable
Wscproxystub.dll6.3.9600.1638411,26422-Aug-201303:07Not applicable
Wscsvc.dll6.3.9600.1818994,72006-Jan-201616:30Not applicable
x86 Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Wscapi.dll6.3.9600.18189148,75206-Jan-201623:46x86
Wscenter.mofNot applicable5,55221-Aug-201323:46Not applicable
Wscisvif.dll6.3.9600.1741520,99229-Oct-201401:52x86
Wscproxystub.dll6.3.9600.1741511,26429-Oct-201401:56x86
Wscsvc.dll6.3.9600.18189104,96006-Jan-201616:38x86
x64 Windows 8.1
File nameFile versionFile sizeDateTimePlatform
Wscapi.dll6.3.9600.18189177,71206-Jan-201623:45x64
Wscenter.mofNot applicable5,55222-Aug-201306:51Not applicable
Wscisvif.dll6.3.9600.1741525,08829-Oct-201402:35x64
Wscproxystub.dll6.3.9600.1741514,84829-Oct-201402:40x64
Wscsvc.dll6.3.9600.18189146,94406-Jan-201616:47x64
Wscapi.dll6.3.9600.18189148,75206-Jan-201623:46x86
Wscenter.mofNot applicable5,55221-Aug-201323:46Not applicable
Wscisvif.dll6.3.9600.1741520,99229-Oct-201401:52x86
Wscproxystub.dll6.3.9600.1741511,26429-Oct-201401:56x86

Additional file information

Windows RT 8.1
File propertyValue
File nameArm_8e91900862edbf06674538f7b57471da_31bf3856ad364e35_6.3.9600.18189_none_258439121c51195a.manifest
File versionNot applicable
File size707
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameArm_microsoft-windows-securitycenter-core_31bf3856ad364e35_6.3.9600.18189_none_aee764a7cdab41ec.manifest
File versionNot applicable
File size24,754
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,593
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
x86 Windows 8.1
File propertyValue
File nameUpdate.mum
File versionNot applicable
File size1,593
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameX86_1f7f087ae9e0613d87147d93dce4de6e_31bf3856ad364e35_6.3.9600.18189_none_8343c9d44af9b572.manifest
File versionNot applicable
File size707
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameX86_microsoft-windows-securitycenter-core_31bf3856ad364e35_6.3.9600.18189_none_aee4f24fcdae2326.manifest
File versionNot applicable
File size24,754
Date (UTC)07-Jan-2016
Time (UTC)00:15
PlatformNot applicable
x64 Windows 8.1
File propertyValue
File nameAmd64_272b273bdea3c06ad6a384f290d0515c_31bf3856ad364e35_6.3.9600.18189_none_797c81e8136695bd.manifest
File versionNot applicable
File size711
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameAmd64_3e7ee81398bb891809f126826072abfa_31bf3856ad364e35_6.3.9600.18189_none_08e46c5e866f7235.manifest
File versionNot applicable
File size711
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameAmd64_microsoft-windows-securitycenter-core_31bf3856ad364e35_6.3.9600.18189_none_0b038dd3860b945c.manifest
File versionNot applicable
File size24,758
Date (UTC)07-Jan-2016
Time (UTC)00:19
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size1,829
Date (UTC)07-Jan-2016
Time (UTC)00:12
PlatformNot applicable
File nameWow64_microsoft-windows-securitycenter-core_31bf3856ad364e35_6.3.9600.18189_none_15583825ba6c5657.manifest
File versionNot applicable
File size22,167
Date (UTC)07-Jan-2016
Time (UTC)00:19
PlatformNot applicable
Properties

Article ID: 3126030 - Last Review: 03/08/2016 18:48:00 - Revision: 2.0

Windows 8.1 Enterprise, Windows 8.1 Pro, Windows 8.1, Windows RT 8.1

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