Configure Windows Server to external NTP Time Source

Reference:

Recommendation - Configure the Root PDC with an Authoritative Time Source and Avoid Widespread Time Skew | Microsoft Docs

Reset config

w32tm /config /update

Set NTP

w32tm.exe /config /syncfromflags:manual /manualpeerlist:0.pool.ntp.org,0x8 /reliable:yes /update

0x8 --> as client mode

w32tm.exe /config /update

w32tm /resync /rediscover
Net stop w32time
Net start w32time