Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server."

Question

I have couple of update panels and jquery tabs on page. And also I am loading couple user controls on update panels. After user waited for couple of minutes (not checked the

Answer 1

This is not the real problem, if you want to see why this is happening then please go to error log file of IIS.

in case of visual studio kindly navigate to:

C:\Users\User\Documents\IISExpress\TraceLogFiles\[your project name]\.

arrange file here in datewise descending and then open very first file.

it will look like:

now scroll down to bottom to see the GENERAL_RESPONSE_ENTITY_BUFFER it is the actual problem. now solve it the above problem will solve automatically.