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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks




Article ID: 948764 - Last Review: February 5, 2008 - Revision: 1.2

Problem: Application.vshost.exe in VS2008 may get corrupted

Source: Microsoft Support

RAPID PUBLISHING

RAPID PUBLISHING ARTICLES PROVIDE INFORMATION DIRECTLY FROM WITHIN THE MICROSOFT SUPPORT ORGANIZATION. THE INFORMATION CONTAINED HEREIN IS CREATED IN RESPONSE TO EMERGING OR UNIQUE TOPICS, OR IS INTENDED SUPPLEMENT OTHER KNOWLEDGE BASE INFORMATION.

Action



Problem:













When debugging a VS 2008 application running on framework 2.0 or 3.5, pressing F5 can case this error message to be thrown:













Request for the permission of type ‘system.Security.Permissions.FileIOPermission, mscorlib, version-2.O.O.O, Culture=neutral, PublicKeyToken-b77a5c561934e069’ failed.

















            Even though the application was running from local machine and the project also on local machine with fulltrust.  If the application.exe is executed, it works fine.


 







 

Result

  When debugging an application in VS 2008 by pressing F5 this error message might be thrown:





Request for the permission of type ‘system.Security.Permissions.FileIOPermission, mscorlib, version-2.O.O.O, Culture=neutral, PublicKeyToken-b77a5c561934e069’ failed.

Cause

The FileIOPermission exception is thrown due to a corrupted application.vshost.exe file generated from the debugger in the IDE. 

Resolution



The issue can be resolved by unchecking the "Enable the Visual Studio hosting process" in the project properties, then rebuild the project and then re-enabling the VS hosting process and rebuilding the project. 

Project Properties->Debug-> uncheck "Enable the Visual Studio hosting process"

More Information













How to: Disable the Hosting Processhttp://msdn2.microsoft.com/en-us/library/ms185330.aspx (http://msdn2.microsoft.com/en-us/library/ms185330.aspx)

Hosting Process (vshost.exe)
http://msdn2.microsoft.com/en-us/library/ms185331.aspx (http://msdn2.microsoft.com/en-us/library/ms185331.aspx)

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APPLIES TO
  • Microsoft .NET Framework 2.0
Keywords: 
kbnomt kbrapidpub KB948764
       

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