Computer-to-Mac — Connection Issues

If you're unable to connect your devices over Ethernet, Thunderbolt, or Manual Wi-Fi when using Luna in Computer-to-Mac mode, you may be running into a known issue where the secondary Mac's connection filter switches to an incompatible connection type. Below are steps to reset the connection and get back up and running.

Note: This workaround may not work for everyone. If these steps don’t help, please reach out to our Support team for further assistance.

Check connection settings on the Primary device

On your Primary Mac or Windows PC, make sure the connection filter is set to allow all network interfaces:

Mac

• Open Luna Display, go to Setting > Mac-to-Mac, and set "Connection Filter" to Allow any network interface (default).
• 

Windows

• Open Luna Display, go to Preferences > Connectivity, and set "Connection Filter" to Allow any network interface (default).
• 

Tip: Be sure to plug in your Thunderbolt or Ethernet cable before launching Luna to ensure it’s used as the main connection.

Reset connection settings on the Secondary Mac

Next, you’ll want to remove any cached connection files on your secondary Mac to reset the pairing:

1. Quit Luna on both devices.
2. On the secondary Mac, open Finder and click Go > Go to Folder.
3. 
4. Enter the following path and press Return:
   
   ~/Library/Application Support/astropad/LunaSecondary/
5. 
6. In this folder, delete all files that include "state_sync" in their name.
7. 

Reconnect and test

Once the files are deleted, relaunch Luna on both devices and try connecting again. This will reset the connection and force the devices to freshly pair.

If you still can't connect after these steps, please contact our Support team so we can help troubleshoot further.