Possible dangerous Request.Path value detected on client (?).

Possible dangerous Request.Path value detected on client (?).

Description: Unhandled exception executing current web request. Review the stack trace for more information about the error and where it originated in the code.

Exception details: System.Web.HttpException: A potentially dangerous Request.Path value was detected on the client (?).

Source code error:

Stack trace:

[HttpException (0x80004005): Se detectó un posible valor Request.Path peligroso en el cliente (?).]
   System.Web.HttpRequest.ValidateInputIfRequiredByConfig() +11985644
   System.Web.PipelineStepManager.ValidateHelper(HttpContext context) +52

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