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Windows agent late for check-in every hour


On a Windows-based system, the SysOrb agent is reported late for check-in almost exactly every 60 minutes.

There are no other symptoms of problems on the system or any network connectivity problems to be found.


This may be caused by a deficiency in Windows "Internet Time" clock adjustments in combination with a virtualization environment that automatically adjusts the guest system clocks.

On a virtualized guest, the clock will usually be synchronized to the hypervisor clock by the virtualization software. The hypervisor should then use clock synchronization (such as NTP) to always have an accurate clock.

If, however, the virtualized guest system also has Windows Internet Time enabled (right click on the clock in the tray, select "Adjust date and time" and select the "Internet Time" tab), then this clock synchronization can conflict with the virtualization system clock adjustments.

Becuase Windows Internet Time adjustments are very primitive - they make a "hard" adjustment of the clock and may even cause the guest time to go backwards(!), this can have any number of ill effects on all software that relies on the time of day - including the SysOrb agent.

If Windows Internet Time sets the system clock back five minutes, then the agent will wait for an additional five minutes until it checks in, because it compares the current time of day with its next expected check-in time.


Do not use Windows Internet Time. Especially on virtualized systems, where the virtualization software will automatically synchronize the guest clock to the hypervisor clock.

Even on non-virtualized systems, Windows Internet Time should be avoided if at all possible.

If a system is a member of a domain, its time will be automatically synchronized to the domain controller. If a system is not virtualized and not in a domain, you can use the SNTP feature of Windows (please consult Windows documentation for details) to enable network time synchronization against a local time server.