When I try to connect to SQL Express with Mcafee SIEM Collector installed on the same server that SQL Express I can't connect.
This is the error: COULD NOT CONNECT TO DATABASE: DATASOURCE NAME NOT FOUND AND NO DEFAULT DRIVER SPECIFIED QODBC3: UNABLE TO CONNECT
Can you ensure that the TCP connection profile is enabled for the SQL server?
For SQL Express you need to make the TCP/IP enabled and change to TCP port to 1433 under the SQL Server Configuration Manager:
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