Asp.net Server Error in Application -  assembly 'System.Data.Services Configuration

Posted on 2011-03-25
Medium Priority
Last Modified: 2012-05-11
My ASP.Net 3.5 VB web application works fine on my dev environment, however, when moved to the Production server I get "Server Errors in Appication / Configuration Errors. I tried crearting a bin folder on the root of the server and copy "System.Data.Entity.dll" and  "System.Web.Entity.dll" but still getting this error please HELP ...

Server Error in XXXX Application.

Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'System.Data.Services, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.

Source Error:


Line 51:         <add assembly="System.Xml.Linq, Version=, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 52:         <add assembly="System.Data.Entity, Version=, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 53:         <add assembly="System.Data.Services, Version=, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 54:         <add assembly="System.Data.Services.Client, Version=, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 55:         <add assembly="System.Security, Version=, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>       

Source File: D:\Inetpub\wwwroot\emspep\web.config Line: 53

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Data.Services, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' could not be loaded.


WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].       

Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053

Question by:demerg
  • 2

Author Comment

ID: 35214486
LVL 52

Accepted Solution

Carl Tawn earned 2000 total points
ID: 35214624
It sounds like you may not have .Net 3.5 installed on your server.

Author Closing Comment

ID: 35234210
Thanks Carl

We moved the site to a 3.5 Version and is now working fine!

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