Server Error in ‘/’ Application. Request timed out.

Tratando de visualizar un reporte con el ReportViewer me marcaba este error, cabe mencionar, que la consulta se llevaba un buen de tiempo en ejecutarse, pero que aun así, no creia que eso provocara un timeout, bueno el error en cuestión era:

Server Error in ‘/’ Application.
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Request timed out.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Request timed out.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:
[HttpException (0x80004005): Request timed out.]