Impersonating users or accessing instance URL redirects to Service PortalDescriptionWhen accessing the instance URL or impersonating the users gets redirected to service portal.Release or EnvironmentAll releases.CauseThere can be multiple ways on how this redirection can be set up. 1) Using the spEntryPage script include. 2) Using a UI script.3) Using Custom URL module in service now.Resolution1) Using the spEntryPage script include. This is discussed in detail at How to configure redirection for Service Portal 2) Using Custom UI Script This is discussed in detail at Service Portal - Redirect via UI Script 3) Using Custom URL module in service now.We can configure one or multiple custom URLs to the instance, and map the custom URL to Service Portal. If the custom URL is same as the instance URL, every user, irrespective of the roles, will be redirected to the service portal selected in the custom URL configuration. Example : Instance Name : SNINSTANCEPortal Name : Service Portal (/sp)If the custom URL configured is same as the instance URL (SNINSTANCE.service-now.com) then redirect to (/sp). Refer : https://docs.servicenow.com/csh?topicname=configure-custom-url.html&version=latest