We are using Office 365 ProPlus 2013. A new user tried to activate their install and received the error that they had reached their install limit of 5 machines. Upon clicking the link the deactivate previous installs that appears in that error dialog, the user is taken to their Office software management tab. Usually, if the user has previous installs, they are listed here and the user is able to deactivate. However, in this case, previous installs do not appear and it seems something else may be the problem.
I am looking for any suggestions as to what may be the problem, thanks.