When configuring our new Azure VM’s created using the Server 2016+SQL 2016 template, we ran into an issue during the WSUS configuration of connecting the DB instance to a SQL server.
WSUS Server – Server 2016
SQL Server – SQL 2016 + Server 2016 Azure template.
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.
Servername\MSSQLServer – Failed
Servername – Failed
IP Address\MSSQLServer – Failed
IP Address –
After validating the SQL network configuration was correct (multiple times), I was still unable to connect WSUS to the SQL instance. After trial and error just using the IP address worked. Validated DNS is functioning based on other connections using server name*