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Client Programs Stop Responding While They Wait for File Locking to Occur
Article ID: 823272 - View products that this article applies to.
In a client-server environment, where multiple client programs perform file locking on a data file that is located on the file server, all the client programs may stop responding (hang).
This problem may occur if the client program performs a particular sequence of lock requests on the data file, and as a result, the client program that is granted the lock never receives the lock. This problem occurs because of a redirector opportunistic locking issue.
Service pack informationTo resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322389/EN-US/ )How to obtain the latest Windows XP service pack
Hotfix informationA 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 this specific problem. 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 Web site:
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.
PrerequisitesNo prerequisites are required.
Restart requirementYou must restart your computer after you apply this hotfix.
Hotfix replacement informationThis hotfix does not replace any other hotfixes.
File informationThe English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.
Windows 2000 Date Time Version Size File name ------------------------------------------------------ 20-Jun-2003 03:29 5.0.2195.6760 407,792 Mrxsmb.sys 20-Jun-2003 03:29 5.0.2195.6760 169,520 Rdbss.sys Windows XP Date Time Version Size File name ------------------------------------------------------ 26-Jun-2003 12:00 5.1.2600.1239 92,160 Cscdll.dll 24-Jun-2003 03:11 5.1.2600.1239 401,920 Mrxsmb.sys 24-Jun-2003 03:11 5.1.2600.1239 156,160 Rdbss.sys
To work around this problem, disable opportunistic locking either on all the client computers or on the file server computer. For additional information about how to disable opportunistic locking, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/129202/ )PC Ext: Explanation of Opportunistic Locking on Windows NT
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/816915/ )New Naming Schema for Microsoft Windows Hotfix Packages
Article ID: 823272 - Last Review: June 5, 2007 - Revision: 3.6