How do I fix "Bluetooth: Not available"
Delete Bluetooth paired list
Close any Bluetooth associated file that may hinder the process
Copy/Paste following and Press the combination Command + Shift + G

/Library/Preferences/com.apple.Bluetooth.plist


Rename it so to save a copy com.apple.Bluetooth-Old.plist

Now delete the original file and restart your Mac, it should create new Plist.

Alternative approach

Press ⌘ Space to activate Spotlight.

Type "bluetooth", choose the 'Bluetooth File Exchange' application, and press Return.

Bluetooth File Exchange will prompt to enable the bluetooth hardware, press Return.

Bluetooth is now enabled and you can quit Bluetooth File Exchange.


Here it is what it looks on my MBA