Error 500 message in outlook web interface

koubel

koubel

Accessing outlook web on https://outlook.office.com doesn't work in current Opera mobile.
I can login successfully but immediately after login, error screen is presented.
See attachment

Error page is https://outlook.office.com/owa/auth/errorFE.aspx

I tried clean all cookies, anonymous mode, nothing works.
When I switch to desktop mode, it works, but back to mobile mode, error page is back.

Android 11
Opera version 92.0.4866.85599

In Chrome app, it works. In previous version, it also worked without problems.

leocg

leocg Moderator Volunteer @koubel

@koubel Didn't get that error here.

I have Android 13.

koubel

koubel @leocg

@leocg interesting, can you help me, how can I try to fix? I don't thing that Android version matters, because in Chrome and desktop mode it works.

jaan513

jaan513

I have the same problem. My work e-mail stopped working from the main page, now it also stopped working from outlook.office.com and outlook.office365.com

It thinks Opera for Android is a legacy browser (Opera 92.1.4866.85656 1909216408, Android 14, Nokia X10).

UTC Date: 2025-10-16T09:34:04.662Z
Client Id: 909BFA61BE0A460FBE7C5FEBA0CA1B1E
Session Id: a3f5f9e1-32f8-4164-a820-a87e2dc14393
Client Version: 20250919.03
BootResult: fail
Back Filled Errors: None
err: Microsoft.Exchange.Clients.Owa2.Server.Core.OwaBasicUnsupportedException
esrc: StartupData
et: ServerError
estack: Error: 500
    at Object.D [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamini/20250919.03/scripts/owa.miniindex.js:2:181517)
    at https://res.public.onecdn.static.microsoft/owamini/20250919.03/scripts/owa.miniindex.js:2:180078
st: 500
ehk: X-OWA-Error
efe: GV2PEPF00003836
emsg: ErrorOwaBasicUnsupportedLegacyBrowser

Last line says ErrorOwaBasicUnsupportedLegacyBrowser - unsupported legacy browser? The fault is on the Microsoft side then, they probably check the Opera version numbers and expect the desktop browser number which is higher, or something.

If anybody has a workaround, I would like to hear from you.

koubel

koubel @jaan513

Yes, I tested also old mobile app version and it also doesn't work now. As I remember it worked 3 weeks ago. So bug is on Microsoft as you describe.
It's little bit weird, that @leocg has no such problem. It shouldn't work for all current Opera mobile apps versions.