Microsoft 365 login problem on latest Canary 27842

Continuing with the problem described.

First of all, I would like to point out that the current status applies to both the Microsoft 365 version - i.e. 16.0.18730.20142 (which I have on my desktop computer) and version 16.0.18829.20000 (which I have on my laptop), although in the online (browser) and Copilot versions I remain logged in normally (the error does not pop up here). The problem therefore concerns only the so-called Microsoft 365 desktop application, both in the insider beta version and the base version, downloaded from the Microsoft 365 website.

Yesterday, on my laptop, the reported error of the Microsoft 365 desktop version has changed slightly, although I still get the login error 2604. However, as you can see in the screenshot of the Microsoft 365 account tab, I am indicated as logged in ("product subscribed to by ..........") and at the same time on the left side I get a message about the need to log in again (however, such an attempt ends with error 2604) and another error displayed after trying to re-enter the login email (error 9bxf9).
In turn, at the bottom of the Microsoft 365 account tab I constantly have a message about the inability to display online services and pressing the "try again" button ends without effect and without changing the message.
Unfortunately, on my desktop computer - in the desktop version of Microsoft 365, I remain - as I wrote earlier - logged out without the option to log in (it gives me errors 2604 and 9bxf9), which prevents me from working in the Microsoft 365 package and probably even from downloading the latest insider version.

I will also add that attempting to use the license verification option in the account tab of the Microsoft 365 desktop application on my laptop also ends with error 2604 and a suggestion to contact support if the error persists.

In turn, using the Manage Account option in the same Microsoft 365 tab correctly takes me to the Microsoft account page where the active subscription is displayed :)
Black magic. I'm counting on the help of the Esteemed Microsoft developers because things are happening that I don't understand :(