I am working on an app using NativeScript and am using Microsoft OAuth2 to authenticate the user, send emails and access SharePoint with it. My problem is that the authentication token I get expires after 1 hour so the user has to login again over and over. A temporary solution I am using is refresh_token which lasts longer (I believe 14 days by default and up to 90 days) but still that is not what I would like. My ideal solution would be an option to stay signed in but it does not seem to exist at this moment. I have read this page https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-token-session-sso and am not sure how to extend the lifetime of my token. If I can extend it at least for a year or six months, that would be great but I don't know how to do it. My app is not registered in Azure but in apps.dev.microsoft.com and I have looked in the manifest but haven't found anything I could write to change the token type or its lifetime.