SMB 2.0 client redirector freezes in Windows Vista SP2 and Windows Server 2008 SP2

Symptoms

Assume that you run an application on a Windows Vista Service Pack 2 (SP2) or Windows Server 2008 SP2-based computer to access a network share. Additionally, assume that the application accesses the network share by using the Server Message Block 2.0 (SMB 2.0) client redirector. In this situation, the computer freezes.  

Cause

This issue occurs because of an issue in the MID window on the SMB client that causes the redirector to freeze.

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: Note 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 Windows Vista SP2 or Windows Server 2008 SP2.

For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

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

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To apply this hotfix, 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

Workaround

To work around this issue, disable SMB 2.0 on the client computer. To do this, type following two commands in the command prompt, and then press ENTER:
sc config lanmanworkstation depend= bowser/mrxsmb10/nsi
sc config mrxsmb20 start= disabled


Note
 There is a space after the (=) sign.

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 the new networking features in Windows Server 2008 and in Windows Vista, such as SMB 2.0, go to the following Microsoft website:
For more information about how to enable/disable SMB protocol, click the following article number to view the article in the Microsoft Knowledge Base:
2696547 How to enable and disable SMBv1, SMBv2, and SMBv3 in Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, and Windows Server 2012
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
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ID articol: 2792795 - Ultima examinare: 13 feb. 2013 - Revizie: 1

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