New Outlook won't let me add my outlook email account.

Good day,

I have added another email address for my wife in the mail app in windows 11. I created it using the the new outlook. I also used the new address to log into my Microsoft account and that works. In new outlook I get the following message, Authentication or initialization failed. Click Reload to try again. Clicking reload does nothing. When I switch to the old mail app the email address is able to send and receive emails. When I switch back to the new outlook I get the Authentication or initialization failed. Click Reload to try again error. What is wrong?

The first picture shows the account working in the old mail app. The second picture shows the error in the new outlook app.

Since updating my email account with the new Outlook, I can no longer view one of my other accounts. I've tried many times to add it but I got this error message. I cannot copy and paste the error message but the error code is EASIDACCOUNT. Please help!

That was helpful.

so I did this as well and now it has downloaded all but the last 5 weeks of emails.

Also, Windows is not opening with my original deskto, which is where I kept all my current working documents.... cannot find them now. It is forcing me to use a new, fresh desktop and none of the desktop folders in the windows explorer have the older files.

I am having the same issue.

It says to contact administrator. Can you please send a private message where we can further see the error info.