You may get "A potentially dangerous Request.QueryString value was detected from the client" after u

Posted by anas on ASP.net Weblogs See other posts from ASP.net Weblogs or by anas
Published on Mon, 10 May 2010 13:54:00 GMT Indexed on 2010/05/10 14:04 UTC
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ASP.NET 4

I was upgradting one of the DNN portals to ASP.NET 4.After Upgrading completed and when i configured it to run under asp.net 4 in iis, I started to get that exception on every postback. The mentioned exception is happening because in ASP.NET 4, the request validation is now being called for every asp.net resource like web services and other httphandlers.As a result, you may get that exception even if you turned off the RequestValidation via: <pages validateRequest="false" .... section. This is...(read more)

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