This article describes an issue in which you can't logon to an Active Directory Federation Services (ADFS) server from a Windows Store app on a device that's running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. An update is available to fix this issue. Before you install this update, see the Prerequisites section.

Symptoms

This issue occurs when the Windows Store app uses the Web Authentication Broker APIs. When this issue occurs, the Web Authentication Broker crashes.

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 an Optional 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 system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

Note The update for Windows RT 8.1 can be gotten 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 get 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 or Windows Server 2012 R2.

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

See 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.

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:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.16 xxx

    Windows RT 8.1

    RTM

    GDR

    6.3.960 0.17 xxx

    Windows 8.1 and Windows Server 2012 R2

    RTM

    GDR

    6.3.960 0.18 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • 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 name

File version

File size

Date

Time

Platform

Authbroker.dll

6.3.9600.18040

97,280

27-Aug-2015

15:11

Not applicable

Authhost.exe

6.3.9600.18040

136,384

28-Aug-2015

22:29

Not applicable

Authhostproxy.dll

6.3.9600.16384

12,288

22-Aug-2013

02:14

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Authbroker.dll

6.3.9600.17415

133,120

29-Oct-2014

00:40

x64

Authhost.exe

6.3.9600.18040

183,368

28-Aug-2015

22:20

x64

Authhostproxy.dll

6.3.9600.17415

19,456

29-Oct-2014

01:21

x64

Authbroker.dll

6.3.9600.17415

104,448

29-Oct-2014

00:34

x86

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Authbroker.dll

6.3.9600.17415

104,448

29-Oct-2014

00:34

x86

Authhost.exe

6.3.9600.18040

148,736

28-Aug-2015

22:24

x86

Authhostproxy.dll

6.3.9600.17415

11,776

29-Oct-2014

01:00

x86


Windows RT 8.1

File property

Value

File name

Arm_565527f2f16c03b762eb558171061117_31bf3856ad364e35_6.3.9600.18041_none_f4f02c63af1b3791.manifest

File version

Not applicable

File size

704

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

Arm_microsoft-windows-security-webauth_31bf3856ad364e35_6.3.9600.18041_none_c06d385012664caf.manifest

File version

Not applicable

File size

33,638

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,590

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_5a0ae7c69323d5aca2df4d155407e2aa_31bf3856ad364e35_6.3.9600.18041_none_d1d3e196676076eb.manifest

File version

Not applicable

File size

708

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

Amd64_9bdc1ae764415ad1c6a12aa5601d571a_31bf3856ad364e35_6.3.9600.18041_none_440876a982a06770.manifest

File version

Not applicable

File size

708

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

Amd64_microsoft-windows-security-webauth_31bf3856ad364e35_6.3.9600.18041_none_1c89617bcac69f1f.manifest

File version

Not applicable

File size

33,642

Date (UTC)

28-Aug-2015

Time (UTC)

22:45

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,267

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

Wow64_microsoft-windows-security-webauth_31bf3856ad364e35_6.3.9600.18041_none_26de0bcdff27611a.manifest

File version

Not applicable

File size

32,132

Date (UTC)

28-Aug-2015

Time (UTC)

22:45

Platform

Not applicable

x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,590

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

X86_4de4e354d4010cfacd384faea81e3b94_31bf3856ad364e35_6.3.9600.18041_none_4e616528658ac6b7.manifest

File version

Not applicable

File size

704

Date (UTC)

28-Aug-2015

Time (UTC)

22:38

Platform

Not applicable

File name

X86_microsoft-windows-security-webauth_31bf3856ad364e35_6.3.9600.18041_none_c06ac5f812692de9.manifest

File version

Not applicable

File size

33,638

Date (UTC)

28-Aug-2015

Time (UTC)

22:42

Platform

Not applicable


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