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I ran the command sudo dscl . -change /Users/YourUserName UniqueID 503 1001 while I was logged in as YourUserName. If I try to change it back with sudo dscl . -change /Users/YourUserName UniqueID 1001 503 I get an eDSPErmissionError. Any idea how I can change the ID back?

Michael Chen
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  • You may be able to use one of the methods in the answers to "I don't have administrator account on my mac", but note that some answers are out of date: depending on your Mac model and macOS version, Single-user mode may not be available (so use Recovery mode), and .AppleSetupDone may be on a different volume (I've added comments under some answers about this). Also, it might create a new admin acct with the old ID, which would complicate things. – Gordon Davisson Jul 02 '21 at 21:44
  • Actually, you might be able to "fix" it just by rebooting. – Gordon Davisson Jul 02 '21 at 21:45

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