Message says "The Microsoft account doesn't exist. Enter a different account or get a new one."

I just set my Microsoft Edge for email default app after Microsoft sent me pop-up when I tried logging in my Microsoft Outlook. Maybe this helps

This is also happening to me. It says my account doesn't exist, WHILE I AM LOGGED INTO IT. MS has got to fix this. I cannot install software on my own #$$$%$# computer, because of MICROSOFT. I'm ready to switch to Linux.

MS also keeps linking my work and home accounts. I DO NOT WANT MY WORK LINKED TO HOME. I have dealt with this before. It keeps happening.

Have I said I cannot stand Microsoft?

And no, I am not going to spend hours first trying this ridiculous fix, then that, than another. Fix the damned product I pay for every single year, again and again and again.

This is a fairly recent change that I have observed, with great frustration. Instead of being able to set up a computer out of the box with our Microsoft 365 account for work, the system makes us sign in with a MICROSOFT account, which is totally different. I set mine up some time ago, personally, with my aol account. When I unpack a new unit, I have to start it off with that personal MICROSOFT account which is different from the work-related Microsoft 365 account.

So set up something, even if you have to open a new email account at Outlook.com or aol or whatever else it will take. That should let you at least set up the machine.

A local account is like setting up another user, but it's only on that one computer. The local account isn't looking to a server, if it is domain joined, and it's not looking to Azure Active Directory, if it's joined to a Microsoft 365 account. I haven't been able to find a way to set that up right out of the box, though. The thing just stops you cold until you satisfy it with a MICROSOFT account, but it won't tell you what a Microsoft account even is. VERY frustrating to a sysadmin who needs to set up machines for employees that aren't on premises to give me passwords and 2FA codes received on their cell phones.

A user had this problem (situation description follows) and what worked for me was to remove her secondary/personal, @harsh.com .com account (which was created when the laptop, a consumer model purchased at a big box store, required a Microsoft account to perform initial setup). The moment I removed the personal account from her profile, her login (with a work account, @workdomain.com) worked; error gone.

Did this under Settings gear, Accounts, My Info

Situation: user was signed into the PC with a local user account, created separately from the original @harsh.com .com account, and signed in to M365 w/Microsoft account, but somehow the pesky @harsh.com .com account was present, too. It was not necessary and just interfered with her sign-in under her work account.

Hope this helps someone. Remember, if that fixes it, you can always add the account back in later. Do heed the warning, though, that it may delete data (at least on this PC/profile) for the @harsh.com .com account.

Someone please tell me that there is a solution now. I am logged into my Microsoft account on two different tabs but when I go to accept an invite for Microsoft Office 365 family and I go to log in.. It says my account does not exist. When I go to "make a new one", it says that the account already exists and that I should try logging in. This is extremely frustrating. I am in a new position at my job and I need this in order to begin working immediately.