

Some antivirus or related software may delete your cookies. Why do I have to keep signing in to Google? Instead, it shows the native window where you have to enter the username and password once. The Windows Mail app can provide the actual Gmail login prompt, but Outlook doesn’t do that. The main reason why it happens is that you are trying to add a Gmail account that has two-step verification enabled. Certificate-Based Credentials are for smart cards and other similar devices. Windows Credentials are user names and passwords used to log on to Windows-based network shares, Web sites that use Windows Integrated Authentication, and Remote Desktop/Terminal Server Connections.


