On the LogMeIn Hamachi application, when you click the power button you receive the following errorSystem Extension Blocked
A program tried to load new system extension(s) signed by "LogMeIn, Inc.". If you want to enable these extensions, open Security & Privacy System Preferences.
In OS X 10.13 High Sierra, Apple added additional security that blocks third-party kernel extensions by default.
Certain System Preferences
are blocked by macOS security when in a remote control connection.
- On your Mac, open System Preferences by clicking the Apple icon > System Preferences...
- Click Security & Privacy.
- Click Allow next to System software from developer "LogMeIn, Inc." was blocked from loading.