[AUTHENTICATIONFAILED] (#MBR1212) Incorrect username or password.
This error occurs when migrating from Yahoo IMAP. In order for MigrationWiz to be able to access the Yahoo mailbox, the Yahoo account must have Allow apps that use less secure sign-in turned on.
To turn this setting on, users will have to:
- Log in to the Yahoo mail account.
- Click on the account name and select Account Info.
- Click on Account security.
- Confirm that Allow apps that use less secure sign-in is enabled.