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Hi, when I opened my mac this morning, the monitor showed that "Enter your system lock PIN code to unlock this Mac." I don't know why and I don't remember I set up this PIN code in the past. Could you please help to solve this issue asap. Thank you.
MacBook Air 13″, macOS 10.13
Does the screen you are encountering resemble this one:
System lock PIN code
"Your Mac asks for a PIN code when it has been remotely locked using Find My. Enter the four-digit or six-digit passcode to continue."
If you did not remotely lock your Mac, then someone else did, in which case the following may be applicable: If you think your Apple ID has been compromised - Apple Support.
It is not the same as a Firmware Password: Set a firmware password on your Mac - Apple Support.
If your Mac doesn't start up all the way - Apple Support describes those two possible roadblocks preventing you from using your Mac.
Does the screen you are encountering resemble this one:
System lock PIN code
"Your Mac asks for a PIN code when it has been remotely locked using Find My. Enter the four-digit or six-digit passcode to continue."
If you did not remotely lock your Mac, then someone else did, in which case the following may be applicable: If you think your Apple ID has been compromised - Apple Support.
It is not the same as a Firmware Password: Set a firmware password on your Mac - Apple Support.
If your Mac doesn't start up all the way - Apple Support describes those two possible roadblocks preventing you from using your Mac.
I have the exact problem today. Did you find a solution?
With a proof of purchase, your current photo ID, and a current Time Machine or cloned backup done, make an appointment at an Apple Store, or Apple Authorized Service Center and they can reset that password on your device. It is the only means to do so.
forgot system lock pin code to unlock my mac
