SharePoint 2013: Troubleshooting Server Error in '/' Application. Object reference not set to an instance of an object
Issue
while accessing the SharePoint 2013 site we get the error below.
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.NullReferenceException: Object reference not set to an instance of an object.
Source Error
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace
[NullReferenceException: Object reference not set to an instance of an object.] Microsoft.SharePoint.Utilities.SPUtility.RedirectToAccessDeniedPage(HttpContext context) +66 Microsoft.SharePoint.Utilities.SPUtility.HandleAccessDenied(HttpContext context) +759 Microsoft.SharePoint.IdentityModel.SPFederationAuthenticationModule.OnEndRequest(Object sender, EventArgs eventArgs) +1197 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +164
Solution
Please follow the below steps to resolve the issue.
- Ensure the Root site(/) is created for the web application.