Outlook for Mac adds new authentication flow for Google IMAP in Insider Fast

Hi Edward, thanks for the post.

We're investigating an issue where the browser is redirecting to google.com after about 3 seconds after clicking "Allow" in the permissions page in the browser (this is after successfully authenticating in the browser). The dialog presented by the browser to redirect back to Outlook is only staying up for 3 seconds in Safari. For Chrome, the dialog stays up but after the page loads google.com the button to "Open Microsoft Outlook.app" no longer works. 

If you're experiencing this issue, the workaround is to click "Allow" (Safari) or "Open Microsoft Outlook.app" (Chrome) before the browser page loads Google.com (within about 3 seconds after clicking "Allow" on the permissions page). This will successfully redirect back to the Outlook app and authentication will complete. 

If you're experiencing another issue, please reach out within Outlook via Help menu > Contact Support. 

Lastly, this feature is only in Insider. If you'd like to go back to the previous auth flow, please uncheck the Insider checkbox in AutoUpdate (Help > Check for Updates) and relaunch Outlook. No need to install a new build, just need to leave the Insider audience. 

Thanks,

Jeff