User not showing up in Office365 admin console

[Tanjim Hossain]

Hi all, I am having an unusual issue where a user alex@xxxx.com has an active Office 365 account and I can see it under Active users.

I am trying to provide him full access to another user's mailbox. But when I try to assign the permission, I can't find the account. Also, I can't find the account when I try to add him is a distribution group.

Please help.

[#2]

does the user have a License added to his account?

[#3]

According to the screenshot, the user seems to be licensed for E3, but have you perhaps switched off the Excchange Online license? Or, since this is a synced user, what kind of recipient is this On-Prem, is it a mailbox, mail user, regular user? In general, you should check the recipient type via the Get-Recipient user@domain.com cmdlet, both On-Prem and in O365.

[#4]

I just had the same issue. It turned out that the user had been set up with a shared mailbox as opposed to a regular/user mailbox. Converting the mailbox from a shared one cleared the issue.

[#5]

Thank you!