Why server print "ERROR AdbMonitor" and "Restarting adb daemon" at first start?

[svladimirs]

I set server to start with windows. Every time server print about "ERROR AdbMonitor", but after that restarts and works. 2018-07-11 12:59:44.747 INFO Main: Starting relay server... 2018-07-11 12:59:44.762 INFO Relay: Relay server started 2018-07-11 12:59:45.776 ERROR AdbMonitor: Failed to monitor adb devices: Подключение не установлено, т.к. конечный компьютер отверг запрос на подключение. (os error 10061) 2018-07-11 12:59:45.776 INFO AdbMonitor: Restarting adb daemon

• daemon not running; starting now at tcp:5037
• daemon started successfully If I close server and start again it works normal: 2018-07-11 16:06:16.844 INFO Main: Starting relay server... 2018-07-11 16:06:16.846 INFO Relay: Relay server started

[rom1v]

If you execute gnirehtet autostart (or gnirehtet autorun), it monitors device using a command to the adb daemon. Whenever the server does not respond, it (re)starts it. On windows start, unless you manually execute adb start-server, it is not started, so it starts it.

TL;DR: this is expected.