My Mac Cannot Sync Contacts After Opting in to Two-Step Login for Office 365
This article applies to: Two-Step Login
If you use the macOS Contacts app, you may not be able to sync your contacts after opting in to Two-Step Login for Office 365.
What to Do
- Select System Preferences.
- Select iCloud.
- Deselect (uncheck) iCloud Keychain.
- Select OK.