Alle Programme und Fenster schliessen.
Command+Shift+G der Gehe zum Ordner und ff. eingeben:
3. “com.apple.Bluetooth.plist” auffinden und löschen
4. Ausschalten und ca. 1 min warten und wieder einschalten.
5. Freuen, dass es wieder geht :-)
First up, delete the Bluetooth plist file and have the Mac create a new one:
Close System Preferences and/or any app that was trying to use or configure any Bluetooth device with the Mac
From the OS X Finder, hit Command+Shift+G to summon Go To Folder and enter the following path:
Locate the file named “com.apple.Bluetooth.plist” and delete it (you may see a com.apple.Bluetooth.plist.lockfile too, if so delete that as well) – this is a system folder so you will need to authenticate with an admin user
- Head to the Apple menu and choose “Shut Down” to power down the Mac
- Wait a minute or so before booting the Mac again
- Head to the Bluetooth menu or System Preference panel to resync your hardware
(Note this is /Library/Preferences/ not ~/Library/Preferences/)
This presumably fixes the issue if it’s just a matter of a corrupted plist file. Yes, shut down the Mac and keep it turned off for about a minute, do not simply reboot. Why shutting it down versus rebooting works here isn’t entirely clear, but after googling around a bit that seems to be a universally experienced situation.
With the Mac up and running again, Bluetooth should now be working as normal and the “Not available” message should be gone from the Bluetooth menu, System Preference panel, and System Profiler utility. If not, you can try the next step to reset the Mac SMC.
Don’t jump straight to this without trashing the Bluetooth preference plist file first, there are reports that users had to perform both actions to get Bluetooth hardware functioning again.