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SharePoint 2013 Server Error in ‘/’ Application( Configuration error, AppSettings)


Poblem and Problem: Today, I configure the SharePoint 2013 Farm with 2 WFE and 2 Apps server. Everything went smooth, no issue / error (knock on the wood). Central Admin working, I successfully created the Search, MMS, User Profile Service and Created 2 Web Apps. Now when I tried to browse the Web App one of WFE throwing the Server Error in “/” Application. I pulling my hairs why and what is going on? Nothing help full Except the Message I am getting in the browser.

Server Error in ‘/’ Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: This configuration section cannot be used at this path.  This happens when the site administrator has locked access to this section using <location allowOverride=”false”> from an inherited configuration file.

Source Error:

Source File: C:\inetpub\wwwroot\wss\VirtualDirectories\29354\web.config    Line: 997

Root Cause:
During the Installation of the IIS for some reason AppSetting Section is locked (See Below). In order to Proper working, this section should be unlocked. Application settings provide a quick and easy to access area to store configuration data for your application.



To fix this error, you have to unlock this section from IIS server level. Follow these steps:


  • Click On the Configuration Editor, Under Management.


  • Select the AppSetting from the DropDown.


  • Now Click on Unlock this Section from Action windows from Right.




Hopefully this will solve your problem as well.

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