No http handler was found for request type 'GET'

I have modified machine config file for some changes(C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG) after modifying am getting this error
No http handler was found for request type 'GET' Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: No http handler was found for request type 'GET'

Source Error:


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