Stop error 0x00000027 in the Rdbss.sys process in Windows 7 or Windows Server 2008 R2

Applies to: Windows Server 2008 R2 DatacenterWindows Server 2008 R2 EnterpriseWindows Server 2008 R2 Standard

Symptoms


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. 

Cause


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

Resolution


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: 
File name File version File size Date Time Platform
Rdbss.sys 6.1.7601.22377 316,416 05-Jul-2013 02:53 x64

Status


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