There is a duplicate ‘system.web.extensions/scripting/scriptResourceHandler’ section defined

Problem:

There is a duplicate ‘system.web.extensions/scripting/scriptResourceHandler’ section defined

\\?\C:\inetpub\wwwroot\wss\VirtualDirectories\80\web.config

URL http://%site%:80/Home.aspx

Solution:

change “sharepoint – 80” application pool’s .net framework version from 4 to 2

 

 

 

 

There is a duplicate ‘system.web.extensions/scripting/scriptResourceHandler’ section defined