Article ID: 9520, created on Dec 29, 2010, last review on May 11, 2014

  • Applies to:
  • Plesk for Windows


When domain owner deploys and runs custom .NET Web Service application on Parallels Plesk domain he may get the following error on HTTP request:

Exception Details: System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

The following error message could be found through the Windows Event Viewer:

Exception message: Could not load file or assembly 'System.ServiceModel, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. Access is denied.


In this case Parallels Plesk admin has to allow Read and Execute permissions for user group 'psacln' to the folder 'C:\Program Files\Reference Assemblies\Microsoft\Framework' ('C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework' on Windows x64) because Parallels Plesk Panel prohibits an access to the folder due to security reason. This is important for Shared Hosting.

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