Messaging Gateway on Hyper-V having time drift issues
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Messaging Gateway on Hyper-V having time drift issues


Article ID: 171833


Updated On:


Messaging Gateway


Symantec Messaging Gateway (SMG) installed on a Hyper-V virtual machine is having more than expected time drift. The NTP settings are set up on the SMG.


Microsoft Windows
Messaging Gateway


  • Hyper-V and the SMG are trying to sync with NTP at the same time. This injects drift of time due to the competing daemons trying to correct the virtual server's time.
  • Hyper-V's NTP daemon can also inject drift because of server load, ratio of virtual to real cores, and RAM allocations, per MSDN.



It is recommended that the Hyper-V Time Syncronization Service for the specific virtual machine be disabled. Only one NTP daemon should be running that will affect the system clock per server.

For instructions on disabling Hyper-V Time Syncronization Service, please refer to Microsoft's Hyper-V documentation.

For more information, see Network Time Protocol (Version 3) Specification, Implemenation, and Analysis at the ITEF website (RFC 1305).