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ursala163 Author

Level 1

6 points

"invalid serial number" message

I get "invalid serial number" when trying to start getting help from Apple Support. I can't get support unless the serial number is accepted. It is definitely the correct serial number

MacBook Air 11", macOS 10.14

Posted on Feb 3, 2020 7:42 PM

Top-ranking reply

HWTech

Level 9

60,380 points

Posted on Feb 4, 2020 8:41 PM

Try copy & pasting the serial number from "About this Mac" found by clicking the Apple menu. You may be mixing up zeroes and "ohs", "B" and "8", "S" and "5", etc.

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"invalid serial number" message

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