clicking login redirects to microsoft login page unless I open private window

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Clicking login redirects to Microsoft login page unless I open a private window.

It redirects to https://login.microsoftonline.com. But login in there doesn't work.
I use firefox.

[Tesla DeLorean]

Seems to have reoccurred here, and be a result of syncing between Google Chrome instances in my case. Had to clear on multiple devices.

Sent .HAR logs to Lina so hopefully the team can glean some information from that.

Not sure what's causing it to go to Microsoft vs the usual Ping or whatever authentication, but it seems architected at some level, and something that's been fiddled with within the last week or so.

[Lina_DABASINSKAITE]

Hello all, 

The fix of the login issue has been implemented. Let us know if all is fine or you still face the issues.

If the redirection still occurs to Microsoft login, let us know by adding a screenshot where we can see the timestamp of the action.

Thanks a lot, 
Lina