If you enabled two-factor verification on your Gmail account, you need to use an app password in Outlook. Use your full Gmail address, including or as the username. To configure Gmail accounts for POP3, use If you don't want to use IMAP you'll need to configure the account manually. If you let Outlook configure your Gmail account, it will set it up as IMAP. Outlook Categories map to Google Groups One user-license is valid on up to 3 PCs.
Set the Auto Sync feature for every 15 minutes or manually sync on your own. Sync Outlook to Google Calendar, Contacts, Tasks! Two-way sync is enabled by default, or choose one way sync.
