Attempts to update the Active Directory database are failing. Active Directory will be unable to log on users while this ...

Attempts to update the Active Directory database are failing.  
  
Active Directory will be unable to log on users while this condition persists. As a result, the Net Logon service has paused.  
  
User Action  
Ensure that adequate hard disk space is available on the volumes where the Active Directory database and log files reside.  
  
Additional Data  
Error value:
%1 %2
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