A user will say that FSRM is saying their drive is full when it’s actually not.
Open ADUC, go to the user, go to Profile tab, and check the “Connect To” address.
RDP to that file servers and open up FSRM Management.
Uncheck “Enable Quota” for that path and then wait and recheck it.
I’ve also had luck running (in Admin CMD):
dirquota quota scan /path:c:\blah\folder # path updated successfully
To see violations:
fsutil quota violations # Server 2012r2+: Get-FsrmQuota -Path "C:\Share01\..."