Are you having trouble adding a Gmail account to Outlook? It's probably because you're not using an app password. Use these steps to successfully complete the task.
If you're trying to set up a Gmail account with the desktop version of Outlook, the process will probably fail, but you didn't enter the wrong password or misspell your address. It's because of the authentication method requirements for the app to work with Gmail.
Full story from the WindowsCentral blog...