Moved to ePO for better support.
I found the solution myself in the meantime.
It appeared that the tcp port mentioned in de core config file and the tcp port in the sql config manager did not correspond.
I filled in the same port but in the dynamic field, but afterwards this changed. so i needed to fill in the right tcp port in the "fixed tcp port" field.
This led to a successfull start of the agent handler and epo server.
Glad you're OK.