Agent not logging events in the database (4361605)

AA Agents installed on the DCs no events logged on the DB other than agent activity.

Errors on the agent log

error locating server / instance specified

Server doesn't support requested protocol

Missing SQL 2012 native client on the DCs

SQL Express by default doesn't turn on SQL Browser service

By default Network protocols Named Pipes and TCP / IP are disabled.

Install SQL 2012 native client on the DCs 

https://www.microsoft.com/en-us/download/details.aspx?id=50402

On the SQL Express configuration manager start the SQL Browser service and enable the Network Protocols

- Named Pipes

- TCP / IP

The agents will start to send the events when this conditions are met.