Hi
I've got the same problem. In eset endp. av. version 8.1.2037.2 haven't got notification with error. After update few workstations to 9.0.2032.2 and using proxy http server in policy the note appears. Turning off policy with proxy make it disapears.
I have over 150 workstations connectet to Eset Protect so turning off proxy polixy is unacceptable.
ESET Management Agent 9.0.1141.0, ESET PROTECT (Server), ver. 9.0 (9.0.2144.0) in virtual appliance