Hi Bingo Buddy,
Thank you for posting in the Microsoft Community Forums.
May I ask why you are not able to make changes to the logged in user? Is it just because there is no option to log in with another user prompted on the login screen? What is the case with the user you need to switch user logins? Are they all different machine accounts on the same computer? Or are they different user accounts in the same company domain? If you are not prompted to log in with another account, you can try just typing in a different account and password to log in.
If the issue is not resolved, I suggest you post a screenshot of the inability to switch user login pages in a follow-up reply.
Best regards
Neuvi Jiang
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