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I am running MacOS High Sierra on a Macbook air and this is the screen that usually comes up on booting. enter image description here The mac starts up after typing the right password. From yesterday after restarting, after typing the password on this screen, a new screen comes up asking for a username and password. This is new and has never happened before. The unusual screen looks like this enter image description here I have tried the username and password used in the previous screenshot but that doesnt seem to work. The wallpaper that comes up is mine hence I don't suspect a hard drive crash. Any solutions for this problem? How to go about this?

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  • Are you using iCloud? Do you have an account on Apple.com? If so you might try that password. – Natsfan Mar 27 '19 at 13:17
  • Is this Mac enrolled into some sort of group policy e.g. at a workplace or the like? – fluffy Mar 27 '19 at 18:46
  • @fluffy no. This just turned up suddenly – Polisetty Mar 28 '19 at 15:34
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Go to System Prefs -> Users & Groups and make sure the Display login window as: list of users is set as shown below in the Login Option tab on the bottom left.

Login options

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  • I also have the same problem as the op. The issue is that we are unable to log into the computer to even access system preferences – Polisetty Mar 28 '19 at 17:33
  • @Polisetty Try starting it in Safe mode and repair the disk. – user14492 Apr 3 '19 at 13:50
  • I've tried repairing the disk (first aid) but that doesn't seem to work. On saf mode, I erased the disk and used my backup instead. Finally that worked out – Polisetty Apr 4 '19 at 15:32
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If you remember the name that Mac shows, every time in admin access window (while unlocking any settings or installing any App). You need to enter that same username and password. Once logged in, immediately changes the setting as said by @user14492.

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