Logic Remote: May not connect to Logic Pro X with some Firewall settings

To resolve the issue:

1. Choose System Preferences from the Apple () menu.
2. Click Security & Privacy in the System Preferences window.
3. Click the Firewall tab in the Security & Privacy panel.
4. Click the lock icon at the bottom-left corner of the Firewall pane; authenticate with an administrator username and password.
5. Click the Firewall Options button.
6. Disable the checkbox for "Block all incoming connections."
7. Click the OK button.

If you have a Touch OSC control surface installed in Logic Pro X, then see Logic Remote may not connect if a Touch OSC device is already installed in Logic Pro for more information.