Article ID: 2839149 - View products that this article applies to.
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On a computer that is running Windows 7 or Windows Server 2008 R2, the system may crash and generate Stop error code 0x00000027 in the Rdbss.sys process. 


This problem occurs because the Redirected Drive Buffering SubSystem (Rdbss.sys) driver incorrectly frees a file control block (FCB) object two times.


The fix for this problem is included in update 2732673.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2732673 "Delayed write failed" error message when .pst files are stored on a network file server that is running Windows Server 2008 R2
For all supported x64-based versions of Windows Server 2008 R2 and Windows 7: 
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File name File version File size Date Time Platform
Rdbss.sys 6.1.7601.22377 316,416 05-Jul-2013 02:53 x64


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



Article ID: 2839149 - Last Review: September 30, 2013 - Revision: 4.0
Applies to
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
kbqfe kbfix kbexpertiseinter kbsurveynew kbbug KB2839149

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