What will occur if you attempt to log in as an admin while logged into O365 with a standard user account?

When attempting to log in as an admin while already logged into Office 365 with a standard user account, the system will maintain the initial session context. As a result, you will be logged in as a standard user, retaining the permissions and capabilities assigned to that account.

This behavior is designed to provide a consistent user experience where sessions are not switched automatically or lead to a conflict. Therefore, if you try to access admin features while authenticated as a standard user, the system honors that original login context and does not escalate permissions or roles just because you're attempting to use admin credentials in the same session. To access admin functionalities, you would need to log out of the standard account and then log in specifically as an admin to ensure the correct permissions are applied for that session.