Microsoft Store App Can't Sign In (Grey box opens and closes immediately)

[Windows 11]

Hello,I have a brand new computer running on Windows 11. When I first started using the computer, I was able to sign into my Microsoft account and the Xbox app. However, when trying to launch games through the Xbox App, a grey box would appear and disappear before telling me that I needed to sign in in order to play my games. I'm signed into my Xbox Account, but when I check the Microsoft Store App, I can't sign in anymore. For this one, it also simply opens a grey window that closes immediately and doesn't allow me to sign in. Now even the Xbox App seems to be struggling to sign me in at all

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