No acces to local Office365 apps with an account which differs from the current windows account

Windows 11 allows you to sign in with one Microsoft account (ABC) and still use a different Microsoft 365 subscription account (XYZ) for Office apps. The PIN prompt happens because Office is trying to authenticate XYZ as a Windows identity, but you only need to add XYZ inside the Office apps themselves, not as a Windows login.

https://learn.microsoft.com/en-us/answers/questions/5596262/two-accounts-signed-into-office-apps-on-the-same-e