This is what happens when you configure a Gmail account in Outlook on your desktop. The result is that you’re unable to add your Gmail account to an email client. You can configure your Gmail account in most email clients but if Gmail deems an email client to be a security risk, it will block it from signing you in.
It offers two-factor authentication in addition to several other precautionary measures for keeping your account secure. Gmail is as secure an email service as you could hope for.
