Comments by Prasadsm (Top 1 by date)

Thanks for the Info Prasad,

but in my case, i am redirecting to the "Error" page in Application_Error method,
and Web.config i have set <customerrors mode="Off">. Instead of defaultRedirect we are handling it manually. The "Error" page gets executed but won't be redirected.

I am getting the below error message saying,

JavaScript runtime error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near '