Could not load file or assembly 'ReportingServicesWebServer, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. Failed to grant permission to execute....

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SSRS

Hi,

while i am trying to access report server in my local system using this below URL , i am getting this below error. Kindly help me how to resolve this issue.

URL= http://11.15.39.43/Reportserver/

Error Message--

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 'ReportingServicesWebServer, Version=9.0.242.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. Failed to grant permission to execute. (Exception from HRESULT: 0x80131418)

Source Error:



Line 32:       <assemblies>
Line 33:         <clear />
Line 34:         <add assembly="ReportingServicesWebServer" />
Line 35:       </assemblies>
Line 36:     </compilation>


 Source File:  C:\Program Files\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportServer\web.config    Line:  34