After changing %Service_Telnet to "enabled" this worked.

%Service_Telnet can be found from: management portal -> system administration -> security -> services

Unfortunately, this is not a correct answer. I want to change so that the Ensemble management portal shows local time. This answer was how to change UTC to local time in code.

Has there been some change in Ensemble since 2015 in viewing time? In 2015 (when I last time worked with Ensemble) it was local time in message browser and event log.

but when these times are displayed in the Message Viewer they go through conversion and are displayed in local time

My problem is that they are displayed in UTC time. What should I do to change this? I couldn't find any setting for this.

Practically this lead us to the answer: erver's time was UTC. After changing server's timezone Ensemble shows local time.