Difficult login activate MacBook Air

joakim113 Said:

"Difficult login activate MacBook Air: Mdm key I have 4 computers want 5 letters"

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Troubleshooting Activating a Mac:

1. Go Here: Activation Lock on Apple Devices - Apple Support
2. Scroll to: Bypass codes
3. As it Reads: "If your MDM solution is unable to remove Activation Lock, contact your MDM vendor support resources or see the Apple Support article How to remove Activation Lock."

The company or organization that has the control of your device is the only one who can manage your device or help you.