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Article ID: 2705742 - Last Review: December 14, 2012 - Revision: 2.0

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When you use a Citrix XenApp application on a computer that is running Windows 7 or Windows Server 2008 R2, you receive a Stop error message that resembles the following:
STOP 0x0000003B (0xC0000005, Parameter2, Parameter3, Parameter4)
  • This Stop error describes a SYSTEM_SERVICE_EXCEPTION issue.
  • The parameters in this error message vary, depending on the configuration of the computer.
  • Not all "0x0000003B" Stop errors are caused by this issue.


This issue occurs because an incorrect address pointer is sent to the Vdtw30.dll Citrix graphics driver in the Citrix XenApp application when the driver processes the DrvCopyBits function.


To resolve this issue, apply the hotfix that is described in the following Microsoft Knowledge Base article:
2748302  ( ) Stop error when you use a Citrix XenApp application in Windows 7 or in Windows Server 2008 R2


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 DrvCopyBits function, go to the following Microsoft website:
General information about the DrvCopyBits function (
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
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Applies to
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
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