46      iPhone_iPad_Mac_apple

sierra sometimes wants a PIN, not password?????

I just updated to sierra from Yosemite, and I've having a bunch of password problems.

I can log in just fine.  I can update settings just fine.  I can install *some* software just fine.  All using my regular password and username combo (the same one I had in Yosemite)

However, some things are now not working.  Notably, some software (specifically centrify express) will not install with my password (I am the admin user, and it is my computer); my username appears, but is greyed out, and, rather than asking for a password, the installer asks for a PIN.  Also, I am unable to unlock the "system" keychain in Keychain Access, and am further unable to show the passwords for anything saved there (eg, my wifi passwords), or delete anything.  Every time I try to unlock the "system" keychain, or modify it, I get the same window with a greyed out username (my username) and a request for the PIN, not the password.  I had no trouble accessing this keychain in Yosemite using my password (and my username was not greyed out).

I never set any PIN on this computer, don't know what it is, and don't know why the system is asking for one.  I also don't know why my username is greyed out.

I did get this computer from a friend, and thought maybe it was asking for his password; I tried it, and that was not the solution. 

I don't know whether this is relevant, but, there was another apple ID account in the app store when I installed sierra.  I logged in as myself, using my apple ID, when I did the install, but it was clear that there was another account present.  In addition, when I logged in after installing sierra, I initially could not update anything in the app store because it wanted the login info for this other, previous apple ID; I was eventually able to get around this, and am now logged into the app store under my apple ID.

Any ideas?

Thanks very much.

To correctly sell or transfer ownership of a Mac, even to someone in your family, you should follow these instructions. Until you do, you will encounter numerous and continual problems such as those you describe.

Refer to What to do before selling or giving away your Mac

1. If you enabled FileVault, disable it in System Preferences > Security & Privacy.
2. "Deauthorize" your iTunes account. Same for Audible if you have one.
3. System Preferences > iCloud > de-select "Back to My Mac" and "Find my Mac".
4. Sign out of iCloud. Select "Delete from Mac" when it appears.

Next: Remove all your personal information by completely erasing the Mac's internal storage.

5. If your Mac shipped with a grey System Install DVD, start your Mac with that disc inserted in the optical drive while holding the c key to boot from it instead of its internal volume, which should be erased before selling it.
   • Apple stopped shipping Macs requiring those discs in August, 2011.
6. If your Mac did not ship with discs, boot OS X Internet Recovery:
   • using three fingers press and hold the following keys: ⌘(command), option, and R.
   • With a fourth finger press the power button to turn on the Mac.
   • Keep the other three fingers where they are until you see the "spinning globe" icon.
   • This method forces the Mac to download its originally installed OS from Apple's servers, which will not require an Apple ID to install.
     
7. Remove any Open Firmware password if you created one: select Firmware Password Utility from the Utilities menu and remove it.
8. Select Disk Utility from the Utilities menu.
9. Remove any partitions you may have created.
10. Select the Mac's hard disk icon, then select the "Erase" tab.
11. Select the "Security Options" button and erase the disk.
    • The more "securely" you erase the disk, the longer it will take.
    • The fastest method is sufficient since all but the most expensive techniques and equipment will be able to recover securely erased data.
12. When it finishes, quit Disk Utility.
13. Select Install Mac OS X from the Utilities menu.
    • An Apple ID will not be required. If a prompt for an Apple ID appears, return to Step 5.
    • Do not create any user accounts.
14. When it finishes, shut down the computer.
15. If you want to install the bundled apps that were included with your Mac, restart by using your Applications DVD if one was included, and install the bundled apps.
    • Apps bundled with newer Macs that shipped without discs cannot be transferred. Its new owner must purchase them from the Mac App Store using his or her own Apple ID.

If the Mac is being sold to someone outside the family consider the following additional information:

16. System Install DVDs that came with your Mac should remain with it forever, and must be included with the sale.
17. Consider including your AppleCare certificate if you bought it, printed documentation, even the box if you still have it.
    • AppleCare stays with the equipment and is transferable.
18. Execute a bill of sale showing the Mac's serial number.
19. Once no longer in your possession, remove the Mac from your devices in My Support Profile.

Did you ever figure this out? I also am asked for a PIN from my installer but don't ever remember setting up a PIN code for my computer.

The only two cases that I can think of that a PIN might be asked for are -

1. If the computer has been locked via 'Find My Mac'
2. If you have turned on two-factor authentication on your Apple ID, see - Two-factor authentication for Apple ID - Apple Support

The later seems the most likely. If the Mac was acquired from a previous user and not fully wiped then it might also relate to the previous owners Apple ID.

I've got the same issue in my keychain access.  I can't change trust settings for sites I need to access because it asks for a PIN instead of a password - I'm an admin, bought the computer new and never set a PIN.

Randomly it will ask for a password not a PIN and I can make updates but not when I seem to need it most.

最后更新：2017-10-16 06:08:10

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