I haven't experienced that issue; but I have had another issue. I have had two machines I am playing with, both AzureAD joined, and enrolled with a Meraki profile. If I leave the machines unused, and not logged in, for say two weeks, the primary Office 365 account that was used to log into the machine disappears - and the original user can no longer log in again. So now I'm wondering about you saying you can not log in anymore - because the password no longer works. Could it be perhaps not the password - but my case - where the whole account is now gone from the machine? In my test machines, to get it working again, I had to repeat the AzureAD join process. ps. I enabled the local Administrator account so I still have a way to login and see what is going on.
... View more