I have a quick tip to share about licenses in Office 365. While I was investigating which users were unlicensed within an Office 365 tenant, I found out that there is also an easy option to bulk assign licenses to users that currently don’t have any license assigned. Furthermore it is also possible to add additional licenses or to overwrite licenses of existing licensed users. To add licenses to unlicensed users without PowerShell scripting do the following steps.
In the Office 365 Admin Center go to Users and Groups.
Set filter to Unlicensed users
Select All users
Click Next until Licenses is highlighted
Choose your wanted licenses