Do credentials (like logging on to my office 365 account) pass through Windows 11 multiple desktops?

I’m logging into a local account on a surface pro running Windows 11.
Let’s say I create 2 desktops. One I show to my students over a projector. I don’t want any access to my Office 365 account on that desktop.
If I log on to my Office 365 account on the second desktop, will my credentials pass through to the student desktop?
Is there anyway to control what does and does not pass through?

Desktops are just an arrangement of window visibility. They’re all on the same account, sharing all the same credentials and settings etc. The only way I know to keep to accounts completely separate on a Windows machine is to log in to a separate account. The technical term for the active user’s screen is the Windows Station, and that is tied to the current user. If you switch users, then all the windows for the switched out user will go away, and the newly switched to user will take control of the Windows Station.

Another option, which would require two machines, would be to log onto the other machine using remote desktop and put that remote desktop session on one of your desktops opposite the student desktop.

Edit: I was too tired when I posted last night and got the name wrong, it’s Windows Station Window Stations - Win32 apps | Microsoft Learn

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Ok, thanks for the clarification. I guess I could also run a virtual machine? But that’s a big hassle too.

It’s annoying, but I’ll just have to log on to my teacher computer (sitting on my desk) for 5 minutes just to post my attendance for each class. And, also unfortunately, our school division has a rule that no teacher or student is allowed to use their phone during instructional time. So, there goes another simple way to post my attendance. Sometimes I just phone my attendance down to the office, but that frustrates the secretary because it takes her away from whatever she’s doing to enter my attendance for me.
(Sorry, guess I got a little sidetracked going off on my rant lol.)

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I like when we get to see more of a personal side to posts. I don’t think you need to apologize for it. It’s humanizing

Depending on your use case, you might be able to get away with using InPrivate browsing, or Incognito mode if you’re using Chrome. If you’re logged into M365 in your browser, and then you open an InPrivate browser window, your session will not carry over to the new InPrivate window, and you can log in to a separate account.

Microsoft used to have a great feature called Defender Application guard, which would automatically spin up an instance of Microsoft Edge in a very low overhead virtual machine. This provided a totally sandboxed environment, no chance of credentials or sessions passing through. Sadly this was deprecated in the 24H2 W11 release.