The following error message appears on the Database window of the NES Setup wizard:
Wait! Loading…. Error: A network-related or instance-specific error occurred while established a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that the SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified.)
NES is deployed on a Domain Controller.
Configure NES on a machine that is not a Windows Domain Controller.