FIX: Windows Explorer may stop responding when you insert a recordable BD-R into the Blu-Ray drive on a computer that is running Windows 7 or Windows Server 2008 R2

Symptoms

You have a computer that is running Windows 7 or Windows Server 2008 R2. Windows Explorer may stop responding when you insert a recordable Blu-ray disc (BD-R) into the Blu-ray drive on this computer.

Cause

This problem may occur after you install the universal drive format (UDF) file system driver (Udfs.sys) update.

For more information about the UDF file system driver (Udfs.sys) update, click the following article number to view the article in the Microsoft Knowledge Base:

975617 An update is available for the UDF file system driver (Udfs.sys) for Windows 7 and Windows Server 2008 R2

Resolution

Hotfix information

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

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

There are no prerequisites for installing this hotfix.

Restart information

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

File information

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Udfs.sys

6.1.7600.16506

246,784

18-Jan-2010

19:52

Udfs.sys

6.1.7600.20621

246,784

19-Jan-2010

08:33

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

File name

File version

File size

Date

Time

Udfs.sys

6.1.7600.16506

328,192

19-Jan-2010

04:40

Udfs.sys

6.1.7600.20621

328,192

19-Jan-2010

06:16

For all supported Itanium-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Udfs.sys

6.1.7600.16506

822,272

19-Jan-2010

04:18

Udfs.sys

6.1.7600.20621

822,272

19-Jan-2010

05:41

Additional notes

The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.

Status

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

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

File name

Package_1_for_kb978526_bf~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,768

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_1_for_kb978526~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

2,466

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_2_for_kb978526_bf~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,773

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_2_for_kb978526~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

2,471

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm_bf~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,912

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm~31bf3856ad364e35~x86~~6.1.1.0.mum

File version

Not Applicable

File size

1,947

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Update-bf.mum

File version

Not Applicable

File size

1,648

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

X86_06b39793f7c6045cffeca5d8804ed326_31bf3856ad364e35_6.1.7600.20621_none_4b7b7cf2af9cde85.manifest

File version

Not Applicable

File size

692

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

X86_25231b32faefcc5c07ad214ec2a06893_31bf3856ad364e35_6.1.7600.16506_none_90af8e156143e663.manifest

File version

Not Applicable

File size

692

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

X86_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.16506_none_a6a771dc7df57a72.manifest

File version

Not Applicable

File size

4,467

Date (UTC)

18-Jan-2010

Time (UTC)

23:51

Platform

Not Applicable

---

File name

X86_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.20621_none_a7166d5d9727d36b.manifest

File version

Not Applicable

File size

4,467

Date (UTC)

19-Jan-2010

Time (UTC)

13:41

Platform

Not Applicable

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

File name

Amd64_a2fdafc56f424f72804a9e6eb43f37c6_31bf3856ad364e35_6.1.7600.20621_none_42ba5835321338d7.manifest

File version

Not Applicable

File size

696

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Amd64_bcd30f72b297575e7c828b0743f643d0_31bf3856ad364e35_6.1.7600.16506_none_f61f0432b422bd63.manifest

File version

Not Applicable

File size

696

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Amd64_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.16506_none_02c60d603652eba8.manifest

File version

Not Applicable

File size

4,471

Date (UTC)

19-Jan-2010

Time (UTC)

09:31

Platform

Not Applicable

---

File name

Amd64_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.20621_none_033508e14f8544a1.manifest

File version

Not Applicable

File size

4,471

Date (UTC)

19-Jan-2010

Time (UTC)

13:41

Platform

Not Applicable

---

File name

Package_1_for_kb978526_bf~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

1,778

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_1_for_kb978526~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,480

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_2_for_kb978526_bf~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,001

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_2_for_kb978526~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,707

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm_bf~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,142

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm~31bf3856ad364e35~amd64~~6.1.1.0.mum

File version

Not Applicable

File size

2,181

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Update-bf.mum

File version

Not Applicable

File size

1,876

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

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

File name

Ia64_4eb9b71489e3e1e14dbf18eac89243e1_31bf3856ad364e35_6.1.7600.16506_none_e96d279e8f777c52.manifest

File version

Not Applicable

File size

694

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Ia64_4f773dbc6d7e115179ef6071323d162d_31bf3856ad364e35_6.1.7600.20621_none_f21ed4b490b450be.manifest

File version

Not Applicable

File size

694

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Ia64_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.16506_none_a6a915d27df3836e.manifest

File version

Not Applicable

File size

4,469

Date (UTC)

19-Jan-2010

Time (UTC)

07:57

Platform

Not Applicable

---

File name

Ia64_microsoft-windows-udfs_31bf3856ad364e35_6.1.7600.20621_none_a71811539725dc67.manifest

File version

Not Applicable

File size

4,469

Date (UTC)

19-Jan-2010

Time (UTC)

13:41

Platform

Not Applicable

---

File name

Package_1_for_kb978526_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,995

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_1_for_kb978526~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

2,699

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,660

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Package_for_kb978526_rtm~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,683

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

---

File name

Update-bf.mum

File version

Not Applicable

File size

1,658

Date (UTC)

19-Jan-2010

Time (UTC)

18:15

Platform

Not Applicable

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