MacOS – Safari prompting for local user account password on Apple websites

apple-idicloudmacossafari

When navigating to an Apple login page in Safari on macOS 10.15 it shows a Apple ID login window and prompts me to enter my local user account password (not my Apple ID password). From what I can tell, this is a Safari feature and is not a part of the webpage.

AppleID prompt
User password prompt on AppleID page

Is there anyway to disable this? I have all Safari autofill settings turned off as I use a third-party password manager. It is super annoying to wait several seconds for this window to be displayed and then have to click "cancel" before I can log in.

EDIT

It appears there is no way to disable this behavior. I have opened an issue in Feedback Assistant (FB7582188). Feel free to dupe it. https://openradar.appspot.com/radar?id=5003428010917888

Best Answer

This is a new feature with safari on macOS and Catalina when you are signed in to your iCloud / AppleID on trusted and keychain synchronized devices when communicating to some Apple secure services online.

Your local admin password unlocks they key store and sends a secure token rather than your iCloud password to authenticate you through Safari to Apple’s web site.

Ways to opt out:

  • Sign out of iCloud on that Mac.
  • Use a different browser.
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