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Possible Duplicate:
ASP.NET, MS11-100, and POST

After applying the updates from the Microsoft security bulletin MS11-100 certain forms on our site stopped working. The exception says "Operation is not valid due to the current state of the object." It also says "[HttpException (0x80004005): The URL-encoded form data is not valid.]" We haven't changed any code??

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user1123615
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  • This will save you some searching: http://stackoverflow.com/questions/8684049/asp-net-ms11-100-how-can-i-change-the-limit-on-the-maximum-number-of-posted-for – Anish Jan 09 '12 at 18:20

1 Answers1

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The main thing that this patch accomplishes is that it limits the number of name/value pairs in submitted form data to 500. I'm not sure what happens, frankly, if you have a valid form which exceeds this; but in your case, the first thing I'd check would be whether or not those forms exceeded this limit.

Ernest Friedman-Hill
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