I created chart in web page its working in local system but its not workign when i upload in to web server its giving this error please help me to resolve this Server Error in '/' Application. Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load file or assembly 'System.Web.DataVisualization, Version=126.96.36.199, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Source Error: Line 4: Line 5: Line 6: <%@ Register assembly="System.Web.DataVisualization, Version=188.8.131.52, Culture=neutral, PublicKeyToken=31bf3856ad364e35" namespace="System.Web.UI.DataVisualization.Charting" tagprefix="asp" %> Line 7: Line 8: Source File: /report.aspx Line: 6 Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.DataVisualization, Version=184.108.40.206, Culture=neutral, PublicKeyToken=31bf3856ad364e35' 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].