Time sync issues after windows update

Question

Hi,
After running a windows update on VM PDC controller server can't syncronize time with online pool (update took approx 10 minutes). Event log is showing error ID 50 (The time service detected a time difference of greater than 5000 milliseconds for 900 seconds)
and time is off for 10 minutes which causes problems with Exchange and Lync services.
According to event log there has been 4 succesful connections with NTP servers before event 50 appeared on log:
The time service is now synchronizing the system time with the time source 1.uk.pool.ntp.org,0x1 (ntp.m|0x1|0.0.0.0:123->178.79.191.28:123).
The time provider NtpClient is currently receiving valid time data from 2.uk.pool.ntp.org,0x1 (ntp.m|0x1|0.0.0.0:123->87.117.251.45:123).
The time provider NtpClient is currently receiving valid time data from 3.uk.pool.ntp.org,0x1 (ntp.m|0x1|0.0.0.0:123->178.79.160.57:123).
The time provider NtpClient is currently receiving valid time data from 1.uk.pool.ntp.org,0x1 (ntp.m|0x1|0.0.0.0:123->178.79.191.28:123).
After running manual resync time is corrected, but it takes time to populate through domain computers without running gpupdate /force on each PC in domain.
PS C:\Windows\system32> W32TM /query /status
Leap Indicator: 0(no warning)
Stratum: 4 (secondary reference - syncd by (S)NTP)
Precision: -6 (15.625ms per tick)
Root Delay: 0.0447998s
Root Dispersion: 7.8017179s
ReferenceId: 0x557750E8 (source IP:  85.119.80.232)
Last Successful Sync Time: 12/06/2013 16:44:09
Source: 0.uk.pool.ntp.org,0x1
Poll Interval: 6 (64s)
PS C:\Windows\system32> W32tm /query /configuration
[Configuration]
EventLogFlags: 2 (Local)
AnnounceFlags: 5 (Local)
TimeJumpAuditOffset: 28800 (Local)
MinPollInterval: 6 (Local)
MaxPollInterval: 10 (Local)
MaxNegPhaseCorrection: 3600 (Local)
MaxPosPhaseCorrection: 3600 (Local)
MaxAllowedPhaseOffset: 300 (Local)
FrequencyCorrectRate: 4 (Local)
PollAdjustFactor: 5 (Local)
LargePhaseOffset: 50000000 (Local)
SpikeWatchPeriod: 900 (Local)
LocalClockDispersion: 10 (Local)
HoldPeriod: 5 (Local)
PhaseCorrectRate: 7 (Local)
UpdateInterval: 100 (Local)
[TimeProviders]
NtpClient (Local)
DllName: C:\Windows\system32\w32time.DLL (Local)
Enabled: 1 (Local)
InputProvider: 1 (Local)
AllowNonstandardModeCombinations: 1 (Local)
ResolvePeerBackoffMinutes: 15 (Local)
ResolvePeerBackoffMaxTimes: 7 (Local)
CompatibilityFlags: 2147483648 (Local)
EventLogFlags: 1 (Local)
LargeSampleSkew: 3 (Local)
SpecialPollInterval: 3600 (Local)
Type: NTP (Local)
NtpServer: 0.uk.pool.ntp.org,0x1 1.uk.pool.ntp.org,0x1 2.uk.pool.ntp.org,0x1 3.uk.pool.ntp.org,0x1 (Local)
NtpServer (Local)
DllName: C:\Windows\system32\w32time.DLL (Local)
Enabled: 1 (Local)
InputProvider: 0 (Local)
AllowNonstandardModeCombinations: 1 (Local)
VMICTimeProvider (Local)
DllName: C:\Windows\System32\vmictimeprovider.dll (Local)
Enabled: 1 (Local)
InputProvider: 1 (Local)
Server is not taking time from bare metal as it's running on Hyper-V and it seems that it's not syncing during startup correctly. Is there a possibility that there can be a config issue as it's working fine when reboot doesn't take too long?
Regards,
Marcin

Answer 1

1. For sure, there in VM settings you have time synchronization from host unchecked.
2. Network monitor will reveal what happens when you stop annd start Windown Time service and Systém Event log contains relevant data.
M.