question

I have tried to create a new server in Microsoft SQL Server 2017 to no avail. This is the error I get: TITLE: New Server Registration ------------------------------ Testing the registered server failed. Verify the server name, login credentials, and database, and then click Test again. ------------------------------ ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 41 - Cannot open a Shared Memory connection to a remote SQL server) (Microsoft SQL Server, Error: 87) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&EvtSrc=MSSQLServer&EvtID=87&LinkId=20476 ------------------------------ The parameter is incorrect ------------------------------ BUTTONS: OK ------------------------------ Anybody tell me what I need to do? Thanks.