Hello, I'm trying to screen scrape a site that is built in ASP.NET environment. I send the correct URL in POST method and get the following error page: "Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster." I know that sending the request in GET method will solve this problem, but its to long for a GET request (about 12,400 bytes). Any ideas on how to overcome the VIEWSTATE validation error? Thank you very much.

In reply to Validation of viewstate MAC failed by Anonymous Monk

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