Hi @Brooke
Based on your description, this appears more likely to be a device-side issue rather than an Outlook account issue. Since the issue occurs with multiple accounts (both your Gmail and school account), you can successfully access the same accounts from your PC and laptop, and Outlook reaches the sign-in process but then becomes stuck on a blank white screen.
To troubleshoot it, you could try to follow these steps:
Ensure that your Android OS and Outlook app are fully up to date.
Temporarily disable any VPN, ad-blocking applications, private DNS, or any mobile security software, then test again.
Try switching between Wi‑Fi and mobile data to see if the behavior changes.
To ensure I fully understand your situation and provide the most effective assistance, I’ll need a few additional details, such as:
Did this behavior start unexpectedly, and have there been any recent changes to the device, such as Android updates, app updates, or security settings changes?
Have you ever been able to sign in to Outlook successfully on this Android device before, or has the issue occurred since the first attempt?
Any update would be appreciated.