Sys.WebForms.PageRequestManagerParserErrorException @ MS Ajax

Spending a weeks to troubleshoot the "Sys.WebForms.PageRequestManagerParserErrorException" error in my company’s project.

 

Finally I found the workaround for it. Very easy, just disable the enableEventValidation on the ASPX page containing the UpdatePanel.

If this workaround doesn’t work for you, you should probably look @ Eilon Lipton’s Blog. Here is some of his findings:

Why do I keeping getting a PageRequestManagerParserErrorException?

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