Problem Statement When an event is fired, the updateprogress runs indefinitely and the update panel is not refreshed or the request does not end in IIS 8.5 (Windows Server 2012).
Migrating application from .net 3.5 to .net 4.5.2. The server has only .net 4.5.2 installed. It works perfectly in my local VS 2013 and also have been running perfectly in IIS 6.5 and Windows server 2003.
What could be the issue ? What am I missing ?