This is a Radius client in the NPS section of a windows server 2012 machine. In the event viewer it says "Reason Code 16, Rason: User credentials mismatch, either the user name does not excist or the password is incorrect"
I know the credentials are ok, becuase I can use the same ones from my phone with no issue.
On the Aruba Instant GUI, I can see in the Maintenance>Certificates pane that the Deafult Server Certificate expirerd in Auguest 2017, so did the Default CP Server Certificate.
And the Device Certificate doesn't expire until 2032.