How do I stay signed in? – Microsoft Community

Hi Jackie, “Keep me signed in” checkbox has been replaced with a prompt that displays after the user successfully signs in. This prompt asks the user if they’d like to remain signed in. If a user responds “Yes” to this prompt, the service gives them a persistent refresh token. This is the same behavior that occurs when a user checks the “Keep me signed in” checkbox in older sign …

https://answers.microsoft.com/en-us/msoffice/forum/all/how-do-i-stay-signed-in/8b4a6453-e37b-4cf4-8419-e0d167ee1937