Office 365 administrators may have noticed that when making changes to their product licenses, that an error may appear under their licensure. This error states that there is a problem with the subscription and changes to billing are required to alleviate it. This is simply untrue, and the real reason for the error is due to there being no available licenses left for that subscription. In the past a scenario like this would read as “0 of 100 licenses available” for example, but now you will see a screen like the following:
Luckily this error is completely benign and will not cause any issues for currently licensed users, or reassigning licenses if needed. The moment a new license becomes free the error will disappear. Microsoft is aware of this error and stated that they will look into it further, but no ETA for resolution has been provided.