Restarting Parallels Service

Open Terminal that can be found in /Applications/Utilities on your Mac.

1. Stop Parallels Service using the following command:
$ sudo launchctl stop com.parallels.desktop.launchdaemon

2. And then start it again using:

$ sudo launchctl start com.parallels.desktop.launchdaemon

3. Enter this command to check if Parallels Service was started:
$ sudo launchctl list | grep com.parallels.desktop.launchdaemon

The output should be like this:
79011  –  com.parallels.desktop.launchdaemon