In some situations, you may encounter the following error message in Easy365Manager:

This error message indicates Easy365Manager cannot connect to the Windows Remote Management service (WinRM) on the configured server.
Investigate if the server name is correct and the Windows Remote Management service is running on the server.
Also, you need to have permissions to create a remote PowerShell connection with the Azure AD Connect Server.
Please have a look at the Easy365Manager Installation and Configuration Guide, section 2.6.4 for further troubleshooting.