I am getting the above error. i read a lot of articles but not gains. What i have already tried Use Validaterequest = "false" at page directive
Made the follwing changes in the web.config
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i have also encoded the value as server.htmlencode. But no gains.
I am using iis 7.5 and .net frame work 4.0.
What else should i do and what are the main reasons which can through this exception?