Multiple acounts in Outlook365 against Office365

I have just migrated a customer from simple imap mail to Office 365. Multiple of these users has more than one acount.
They have their personal mail eg. but some need other mail accounts like

The problem is that Outlook 2016/365 wont Allow the extra acount but says something like “we appoligize but another user already logged into the organisation from this computer”

What Can I do to accomplish this?
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In the same outlook profile add one more outlook account and thats it
u could even add one more email address to existing account so that it will be lile as primary and
This will achieve what you are looking for in single outlook configuration and profile
OhmitAuthor Commented:
Please write the whole post ;-)
Normally I would just add an extra mail account to the same profile.
Example + HOWEVER if In this case I get an error saying:
“we appologize but another user already logged into the organisation from this computer”
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I have commented from android phone.
The problem is once I submitted post from mobile, I cannot edit it again, infact if I do that I can't see earlier comment
Thanks for info
Check below post, it would help, it is kind of bug
Vasil Michev (MVP)Commented:
Make sure you are running a recent build of Office, as Mahesh mentioned above there were lots of issues with multiple accounts back in the day. Those should all be solved now and I havent uad any issues with adding multiple accounts from the same organization in Outlook for a while.

If those are shared/resource accounts tou can also add them as additional mailboxes or automap them.
OhmitAuthor Commented:
Hello Vasil - its an honor! :-)
Im affraid this is not a simple issue. I uses latest build of Office 2016.
Vasil Michev (MVP)Commented:
Latest as in which build/channel? I just tried adding another account from my org and I dont see any issues on my end. Another thing that comes in mind is the interoperability with WAM and similarly, the Azure AD join/registration process, so are those W10 machines and have you configured AAD Join or similar on them?

You can always open a support case and check whether there are some known regressions.
OhmitAuthor Commented:
I found solution my self!
Make sure that you log out from all Office products.
Go to Credentials Manager in Controle Panel. Delete every instance of other Office accounts.
Thats it

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