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This article describes an issue that occurs when many file operations occur in quick succession in Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2. You can resolve this issue by using the update in this article. Before you install this update, check out the Prerequisites section.

Symptoms

Assume that many batched file operations occur on items that are visible in the navigation pane of File Explorer. When this issue occurs, those items do not appear in the navigation pane.

Note The issue does not occur immediately when you log on to the computer. It occurs during the regular usage.

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 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 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 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 does not replace a previously released update.

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:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.17xxx

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

    RTM

    GDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately 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.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Explorerframe.dll

6.3.9600.17824

2,706,432

07-May-2015

16:12

x86

Shell32.dll

6.3.9600.17824

19,734,960

07-May-2015

16:53

x86

Windows.systemtoast.explorer.lnk

Not applicable

1,450

21-Aug-2013

23:49

Not applicable

Windowsshell.manifest

Not applicable

670

18-Jun-2013

12:32

Not applicable

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Explorerframe.dll

6.3.9600.17824

3,109,376

07-May-2015

17:00

x64

Shell32.dll

6.3.9600.17824

22,292,672

07-May-2015

17:50

x64

Windows.systemtoast.explorer.lnk

Not applicable

1,450

22-Aug-2013

06:54

Not applicable

Windowsshell.manifest

Not applicable

670

18-Jun-2013

15:00

Not applicable

Explorerframe.dll

6.3.9600.17824

2,706,432

07-May-2015

16:12

x86

Shell32.dll

6.3.9600.17824

19,734,960

07-May-2015

16:53

x86

For all supported Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Explorerframe.dll

6.3.9600.17824

2,363,392

07-May-2015

15:46

Not applicable

Shell32.dll

6.3.9600.17824

18,332,704

07-May-2015

16:24

Not applicable

Windows.systemtoast.explorer.lnk

Not applicable

1,450

21-Aug-2013

23:43

Not applicable

Windowsshell.manifest

Not applicable

670

18-Jun-2013

14:54

Not applicable

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_36de60437823c981883963eb558e0613_31bf3856ad364e35_6.3.9600.17824_none_19a75562f9713e90.manifest

File version

Not applicable

File size

701

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

X86_f10ed4206f676be6178f1bb03f4a9dc5_31bf3856ad364e35_6.3.9600.17824_none_872a7f4cc90fa309.manifest

File version

Not applicable

File size

695

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

X86_microsoft-windows-explorerframe_31bf3856ad364e35_6.3.9600.17824_none_575da0288f39dfd6.manifest

File version

Not applicable

File size

70,453

Date (UTC)

07-May-2015

Time (UTC)

17:05

Platform

Not applicable

File name

X86_microsoft-windows-shell32_31bf3856ad364e35_6.3.9600.17824_none_0109c1a32d64e6bb.manifest

File version

Not applicable

File size

1,349,346

Date (UTC)

07-May-2015

Time (UTC)

17:05

Platform

Not applicable

File name

Windowsshell.manifest

File version

Not applicable

File size

670

Date (UTC)

18-Jun-2013

Time (UTC)

12:32

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_29017a3fb6c1184dc72f0f8297b3d2ea_31bf3856ad364e35_6.3.9600.17824_none_ffe9b50888423692.manifest

File version

Not applicable

File size

699

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Amd64_8accb1b8dc0003271f025b08866713b6_31bf3856ad364e35_6.3.9600.17824_none_f6a06a5a4937e6e7.manifest

File version

Not applicable

File size

705

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Amd64_a7da2019f9044bdb1902c94a2b09b819_31bf3856ad364e35_6.3.9600.17824_none_a60d56640506fd0b.manifest

File version

Not applicable

File size

699

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Amd64_e3aaf9c4a076fb5b00c4cc7bd24af23f_31bf3856ad364e35_6.3.9600.17824_none_91d3a6c1138dd56c.manifest

File version

Not applicable

File size

705

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Amd64_microsoft-windows-explorerframe_31bf3856ad364e35_6.3.9600.17824_none_b37c3bac4797510c.manifest

File version

Not applicable

File size

70,457

Date (UTC)

07-May-2015

Time (UTC)

18:08

Platform

Not applicable

File name

Amd64_microsoft-windows-shell32_31bf3856ad364e35_6.3.9600.17824_none_5d285d26e5c257f1.manifest

File version

Not applicable

File size

1,341,288

Date (UTC)

07-May-2015

Time (UTC)

18:08

Platform

Not applicable

File name

Wow64_microsoft-windows-explorerframe_31bf3856ad364e35_6.3.9600.17824_none_bdd0e5fe7bf81307.manifest

File version

Not applicable

File size

69,781

Date (UTC)

07-May-2015

Time (UTC)

17:04

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.3.9600.17824_none_677d07791a2319ec.manifest

File version

Not applicable

File size

1,311,141

Date (UTC)

07-May-2015

Time (UTC)

17:04

Platform

Not applicable

File name

Windowsshell.manifest

File version

Not applicable

File size

670

Date (UTC)

18-Jun-2013

Time (UTC)

15:00

Platform

Not applicable

Additional files for all supported Windows RT 8.1

File property

Value

File name

Arm_0c75fef199552401a80461850976afd6_31bf3856ad364e35_6.3.9600.17824_none_ca5d13b70270c7c5.manifest

File version

Not applicable

File size

695

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Arm_7fa8c00fdd776f1fd37a7a1b069c6274_31bf3856ad364e35_6.3.9600.17824_none_2c8eac20b6e17d5a.manifest

File version

Not applicable

File size

701

Date (UTC)

09-May-2015

Time (UTC)

00:04

Platform

Not applicable

File name

Arm_microsoft-windows-explorerframe_31bf3856ad364e35_6.3.9600.17824_none_576012808f36fe9c.manifest

File version

Not applicable

File size

70,453

Date (UTC)

07-May-2015

Time (UTC)

16:30

Platform

Not applicable

File name

Arm_microsoft-windows-shell32_31bf3856ad364e35_6.3.9600.17824_none_010c33fb2d620581.manifest

File version

Not applicable

File size

1,343,072

Date (UTC)

07-May-2015

Time (UTC)

16:30

Platform

Not applicable

File name

Windowsshell.manifest

File version

Not applicable

File size

670

Date (UTC)

18-Jun-2013

Time (UTC)

14:54

Platform

Not applicable

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

CauseThis issue occurs because of a race condition in the explorer.exe process that causes it to handle notifications in an incorrect order on the system.

References

See the terminology that Microsoft uses to describe software updates.

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