Dear @Leah,
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, whenever you use a VPN or your personal hotspot, Microsoft Teams forces you to repeatedly confirm your account and then blocks access to your Assignments tab, even though the sign‑in is successful. This only happens on hotspot or VPN connections, not on regular Wi‑Fi, and you seem to be the only student affected.
This issue occurs because you are connecting through a VPN or a personal hotspot, which triggers the school’s security system. This is an access policy set by your school to protect student account security and privacy. In this case, the most effective solution is to contact your school’s IT or administrative team, as only they can review or adjust the security policy applied to your education account.
And if you're unsure who your IT/ Global Admin is, this guide may help How do I find my Microsoft 365 admin? - Microsoft Support
In the meantime, if you are using Teams desktop app version, try to switch to Web version (or opposite) or try to use Chrome or Edge and log in via Incognito / Private window
Note: Please understand that as forum moderator, my primary goal is to provide helpful guidance and support through general troubleshooting steps. While I don’t have access to internal systems or test devices required to resolve backend issues, I truly appreciate your understanding of these limitations. I genuinely hope the information I share helps guide you in the right direction, and I'm always here to assist as much as I can within my scope.
I hope your issue will be resolved ASAP, if you have any other questions, please feel free to reach out.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.