While trying to open the Report Manager site (http://localhost/reports) we were getting http 500 error.

While looking into the logs the exception thrown was

ERROR: System.Web.HttpException: Error executing child request for Error.aspx. —> System.Web.HttpUnhandledException: Exception of type ‘System.Web.HttpUnhandledException’ was thrown. —> System.InvalidOperationException: This implementation is not part of the Windows Platform FIPS validated cryptographic algorithms.

To fix it you can update the reporting service web.config  with following key.

<machineKey validationKey=”AutoGenerate,IsolateApps” decryptionKey=”AutoGenerate,IsolateApps” validation=”3DES” decryption=”3DES”/>

 

Thanks to Andy for posting the solution.

SQL Reporting Services SRS RP HTTP 500 Error When Browsing Reports Site.

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