After starting up my newer iMac it's asking for for the login keychain password for several applications. It is stuck in a cycle that I can't cancel out of. Any suggestions?
It sounds as an issue either with the Keychain App. Try repairing it. To do so just:
- Locate the Keychain Access application, under /Applications/Utilities.
- Choose Keychain Access > Keychain First Aid.
- Enter your User name and Password.
- Select Verify and click Start.
- If any problems were found, select Repair and click Start again.
It could be, too, that you've changed your account password without using the Accounts Preferences pane. If that is the case, for your default keychain to be unlocked automatically when logged in, you'll have to Synchronize your Keychain Access and login passwords. To do so just:
- Open Keychain Access.
- From the Edit menu, choose Change Password for Keychain "login."
- Type the former password of the account that you are currently logged in to, then click OK.
- If you entered the correct password, a new window appears; enter the original password again in the Current Password field.
- In the New Password field, type the password that matches your current account password.
- Re-enter the newer password in the Verify field, then click OK.
This is needed because, as Apple explains it:
If you change your account's password using your Mac OS X Install disc (or if your network-based account password is changed due to a network admin forcing a password change), your default keychain password (which uses the same initial password as your user account) does not change. Because of this, you will be prompted to enter a keychain password each time an application requires authentication that your keychain would normally provide.
The keychain by default locks after some time of inactivity and when the computer sleeps.
You can disable this behaviour on the keychain settings:
- Select the keychain
- Edit / Right click
- Change Settings for Keychain "login"
- Uncheck "Lock after 5 minutes of inactivity" and "Lock when sleeping" options
I had the same problem. It has bothered me for several weeks on my new Mac. It should be caused by changing Mac password using 3rd party software. On macOS El Capitan and Sierra, there is no
Keychain Access > Keychain First Aid. Changing login keychain's password does not help. To solve this problem, you have to reset your default keychain.
Please note: you'll lose all your passwords stored in it.
- Open Keychain Access, which is in the Utilities folder of your Applications folder.
- Choose Preferences from the Keychain Access menu (or Cmd,), then click the Reset My Default Keychain button in the preferences window. After you enter your new password (same to the password of your Mac account), Keychain Access creates an empty login keychain with no password. Click OK to confirm. (If you don't see a Reset My Default keychain button, close the preferences window and select the “login” keychain from the left side of the Keychain Access window. Press the Delete key, then click Delete References.)
- Choose Log Out from the Apple menu to return to the login screen.
- Log in to your account. Your account password and login keychain password now match.
There is a bug that is affecting some users which is related to this. You may see the colour wheel of death when you get the certificate trust prompt from some applications, like Microsoft Remote Desktop or Microsoft Office (weird but it happened only with these to me!).
Once you see the colour wheel, your only option is to reboot and after this you will get several prompts for the keychain password BUT you would have to type your old password even if you previously reconfigured Keychain Access to use the same password.
You need to create a new keychain if admin has changed your password.
Per a deleted Apple Support article:
The keychain password is available only to the user and not the administrator. If the login password is reset by the administrator, the keychain password is not changed. The user is asked to reset the keychain password during the next login. If the login password was reset because the user forgot the old password, the keys, passwords, and other information in the keychain won’t be accessible, and the user will need to create a new keychain.
I came across this same issue on El Capitan, and had already searched and tried all suggestions on here.
My solution was to disable FileVault under
System Settings > Security & Privacy and everything works fine again.
Before you downvote because you can't understand how someone can disable the default FileVault encryption: I don't see the downside of disabling FileVault. For really sensitive data, other tools such as Symantec Drive Encryption / PGP or TrueCrypt can be used. At least it doesn't get in the way like FileVault does with the system keychain.
As mentioned in the comments, I had searched on SO for this questions and found several answers, of which none worked for me. Therefore disabling FileVault (and switching to another, independent encryption tool for the data you want or need encrypted) is a viable option.