Symptoms

Consider the following scenario:

  • You have multiple monitors installed on a computer that is running Windows 7 or Windows Server 2008 R2.

  • You run a virtual machine that is running Windows 7 on the computer.

  • You extend the full-screen display on the virtual machine to multiple monitors.

In this scenario, Windows Explorer stops responding. Additionally, the Explorer.exe process causes very high CPU usage.

Note This issue occurs if you enable the Windows Aero feature on the virtual machine.

Cause

This issue occurs because the Explorer.exe process tries to adjust the Z-order for the full-screen display on multiple monitors.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix 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 7 and Windows Server 2008 R2 file information 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

    6.1.760
    0.16xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, extremely important 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 separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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 7

File name

File version

File size

Date

Time

Platform

Shell32.dll

6.1.7600.16788

12,867,584

25-Mar-2011

04:42

x86

Shell32.dll

6.1.7600.20933

12,870,656

25-Mar-2011

04:29

x86

Shell32.dll

6.1.7601.17586

12,872,192

25-Mar-2011

04:33

x86

Shell32.dll

6.1.7601.21692

12,872,704

25-Mar-2011

04:30

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Shell32.dll

6.1.7600.16788

14,163,968

25-Mar-2011

05:16

x64

Shell32.dll

6.1.7600.20933

14,169,088

25-Mar-2011

05:15

x64

Shell32.dll

6.1.7601.17586

14,171,648

25-Mar-2011

05:30

x64

Shell32.dll

6.1.7601.21692

14,172,672

25-Mar-2011

05:14

x64

Shell32.dll

6.1.7600.16788

12,867,584

25-Mar-2011

04:42

x86

Shell32.dll

6.1.7600.20933

12,870,656

25-Mar-2011

04:29

x86

Shell32.dll

6.1.7601.17586

12,872,192

25-Mar-2011

04:33

x86

Shell32.dll

6.1.7601.21692

12,872,704

25-Mar-2011

04:30

x86

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Shell32.dll

6.1.7600.16788

21,171,712

25-Mar-2011

04:09

IA-64

Shell32.dll

6.1.7600.20933

21,179,392

25-Mar-2011

04:13

IA-64

Shell32.dll

6.1.7601.17586

21,184,000

25-Mar-2011

04:09

IA-64

Shell32.dll

6.1.7601.21692

21,185,536

25-Mar-2011

04:09

IA-64

Shell32.dll

6.1.7600.16788

12,867,584

25-Mar-2011

04:42

x86

Shell32.dll

6.1.7600.20933

12,870,656

25-Mar-2011

04:29

x86

Shell32.dll

6.1.7601.17586

12,872,192

25-Mar-2011

04:33

x86

Shell32.dll

6.1.7601.21692

12,872,704

25-Mar-2011

04:30

x86

Status

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

More Information

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Update.mum

File version

Not applicable

File size

2,773

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

X86_01aebdd91bb3b0b3a69207d46b5a7e55_31bf3856ad364e35_6.1.7601.17586_none_d9e0f9ab5e11c271.manifest

File version

Not applicable

File size

695

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

X86_558b5e0f49f8e0132b29c052f0bc086e_31bf3856ad364e35_6.1.7601.21692_none_3dd47a2940da2e1b.manifest

File version

Not applicable

File size

695

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

X86_8350d559c9741fd3d7b84ab3185fa70a_31bf3856ad364e35_6.1.7600.20933_none_f45f2d360e80e35a.manifest

File version

Not applicable

File size

695

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

X86_dda4e0486e584f7337c8049e82e2275a_31bf3856ad364e35_6.1.7600.16788_none_9e99b72c04e7cdae.manifest

File version

Not applicable

File size

695

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

X86_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.16788_none_6c028977734cc3d1.manifest

File version

Not applicable

File size

1,059,457

Date (UTC)

25-Mar-2011

Time (UTC)

05:08

Platform

Not applicable

File name

X86_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.20933_none_6cbd36528c46565a.manifest

File version

Not applicable

File size

1,059,457

Date (UTC)

25-Mar-2011

Time (UTC)

04:51

Platform

Not applicable

File name

X86_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.17586_none_6de6e5e97074fd0f.manifest

File version

Not applicable

File size

1,059,457

Date (UTC)

25-Mar-2011

Time (UTC)

04:59

Platform

Not applicable

File name

X86_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.21692_none_6e61b1a0899e536e.manifest

File version

Not applicable

File size

1,059,457

Date (UTC)

25-Mar-2011

Time (UTC)

04:54

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_2dd86b33571e22c6f5db3ae99ebbdfd4_31bf3856ad364e35_6.1.7601.21692_none_d6fff1ba973d2ce6.manifest

File version

Not applicable

File size

699

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_39a05ef7bf53bb11a16565a15fda7a7e_31bf3856ad364e35_6.1.7600.16788_none_12dc1d24bc7dc077.manifest

File version

Not applicable

File size

699

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_39a393210eff864c58a1cc33de358db1_31bf3856ad364e35_6.1.7600.20933_none_fbce5a2faf8e8fda.manifest

File version

Not applicable

File size

699

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_48ef96f78ef62c4566f0c1aa7f31654d_31bf3856ad364e35_6.1.7600.20933_none_431d80a27217bf90.manifest

File version

Not applicable

File size

1,040

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_6a5a64c59e7a5131293638aee020b4df_31bf3856ad364e35_6.1.7601.17586_none_5f18f16584c9e5a8.manifest

File version

Not applicable

File size

699

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_6bb53ffd051a9eb9edfe2100e751dc81_31bf3856ad364e35_6.1.7601.21692_none_28ac8e042d5af47b.manifest

File version

Not applicable

File size

1,040

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_a5cda428020ba22ab65b23d1a523da7d_31bf3856ad364e35_6.1.7600.16788_none_14cf07db3a48c9ed.manifest

File version

Not applicable

File size

1,040

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_fcad90a121d8c65d988e033c47d201ee_31bf3856ad364e35_6.1.7601.17586_none_508b03e9ac5ff06e.manifest

File version

Not applicable

File size

1,040

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Amd64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.16788_none_c82124fb2baa3507.manifest

File version

Not applicable

File size

1,058,443

Date (UTC)

25-Mar-2011

Time (UTC)

06:04

Platform

Not applicable

File name

Amd64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.20933_none_c8dbd1d644a3c790.manifest

File version

Not applicable

File size

1,058,443

Date (UTC)

25-Mar-2011

Time (UTC)

05:54

Platform

Not applicable

File name

Amd64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.17586_none_ca05816d28d26e45.manifest

File version

Not applicable

File size

1,058,443

Date (UTC)

25-Mar-2011

Time (UTC)

05:56

Platform

Not applicable

File name

Amd64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.21692_none_ca804d2441fbc4a4.manifest

File version

Not applicable

File size

1,058,443

Date (UTC)

25-Mar-2011

Time (UTC)

05:45

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

3,215

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.16788_none_d275cf4d600af702.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

05:02

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.20933_none_d3307c287904898b.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:43

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.17586_none_d45a2bbf5d333040.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:52

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.21692_none_d4d4f776765c869f.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:45

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_2e4cd8245dc8cfff05a97ff6a5970514_31bf3856ad364e35_6.1.7600.16788_none_f61c90cf1434f894.manifest

File version

Not applicable

File size

1,038

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Ia64_4275b836f6505198181e03f500d3c92f_31bf3856ad364e35_6.1.7601.21692_none_5740c0b8d60b4a35.manifest

File version

Not applicable

File size

1,038

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Ia64_806814c571b7390f8e73d32a780266c4_31bf3856ad364e35_6.1.7600.20933_none_820f7eb5d2e16b15.manifest

File version

Not applicable

File size

1,038

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Ia64_a5fff90ce3784c0ebabe6863a05664cc_31bf3856ad364e35_6.1.7601.17586_none_b8ed3b1dc6d07289.manifest

File version

Not applicable

File size

1,038

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Ia64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.16788_none_6c042d6d734acccd.manifest

File version

Not applicable

File size

1,058,441

Date (UTC)

25-Mar-2011

Time (UTC)

05:55

Platform

Not applicable

File name

Ia64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.20933_none_6cbeda488c445f56.manifest

File version

Not applicable

File size

1,058,441

Date (UTC)

25-Mar-2011

Time (UTC)

05:45

Platform

Not applicable

File name

Ia64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.17586_none_6de889df7073060b.manifest

File version

Not applicable

File size

1,058,441

Date (UTC)

25-Mar-2011

Time (UTC)

05:53

Platform

Not applicable

File name

Ia64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.21692_none_6e635596899c5c6a.manifest

File version

Not applicable

File size

1,058,441

Date (UTC)

25-Mar-2011

Time (UTC)

05:43

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,168

Date (UTC)

25-Mar-2011

Time (UTC)

19:13

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.16788_none_d275cf4d600af702.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

05:02

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7600.20933_none_d3307c287904898b.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:43

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.17586_none_d45a2bbf5d333040.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:52

Platform

Not applicable

File name

Wow64_microsoft-windows-shell32_31bf3856ad364e35_6.1.7601.21692_none_d4d4f776765c869f.manifest

File version

Not applicable

File size

1,054,916

Date (UTC)

25-Mar-2011

Time (UTC)

04:45

Platform

Not applicable

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