Why I cant add new email account in new outlook but in old it works?

I have the same issue.

A couple of weeks ago, I updated to the new Outlook on my computer. This works fine.

Now I try to update Outlook on some other computers of mine, and I run into the problem "This account is not supported in Outlook for Windows due to the license provided by your work or school."

Can Microsoft please fix this as soon as possible?

I have the same issue. Switching to new Outlook disables all the Hosted Exchange accounts that I have on Microsoft 365 with the 'This account is not supported ....... message.

Im pretty sure this is a bug in coding. I just cant see that Microsoft would impose this licensing restriction on Outlook desktop users. After all, many people use Outlook to access third party email accounts so where would that leave them?

That having been said - Id add my voice to those requesting that MS fix this quickly and also explain how we can manually trigger a download of the latest build.

I'm currently running into the same issue with one of our users.

Currently only a small handful of us (that I'm aware of) are using the preview. Myself & the user are both using emails from multiple tenants. For me it's 3 M365 accounts (and a gmail) and for him it's 4 M365 accounts, one of which is through GoDaddy, (and a gmail).

In our case, all of my accounts work. My accounts are licensed as MS Business Premium (x2) and Exchange Online 1 (x1). For my user, his WERE originally MS Business Premium (primary tenant) (x1), Exchange Online 1 (x2), and for the fourth tenant I don't have access but strong assumption he has MS Business Standard on that one. In his case, Tenant #1 (ms bus premium) and tenant #4 (godaddy, probably ms bus standard) function but the two exchange online accounts would not connect, claiming this same error. To clarify - my EO1 accounts DO work, and I changed his EO1 to an MS Business Premium license (upgraded him) and it did not change whether or not we could log into that account.

So it doesn't appear to be specific to licensing because it's not causing the issue for me & not resolving it for him. In both cases the master account was in our primary tenant which is MS Business Premium licensing. I am the admin in 3 out of the 4 tenants in question, and have not set anything to prevent users from using the preview. Additionally, no users have a flag set for OneWinNativeOutlookEnabled, however in testing I set this to true & it also did not resolve the issue.

Any input would be greatly appreciated.

I have the same issue and this is infuriating. I consult for other companies and often it is easier for them if I collaborate using an email address they provide for me. I like them all in Outlook synched across all my devices - so I don't miss a random meeting invite or email. The 'NEW' Outlook removed my other accounts and now says I cannot add them. I myself pay for Office Premium ($20/month per user) and I know one other company is paying that for one of my accounts.. I want my accounts back in Outlook on my Microsoft Surface - and I don't want features I already pay for to just disappear on me. We're trying to do business here and Outlook is supposed to enable that. Lately, it's been an unreliable clusterfork.

I have the same issue. The 'NEW' Outlook removed my Godaddy hosted 365 accounts and now says I cannot add them. I want my accounts back in Outlook.

Is there a way of reverting back to a previous version or Windows Mail?