Topics in this section
NTP Peer Flags
A quick reference to 0x1, 0x2, 0x4, 0x8 and common combinations such as 0x9.
Registry Settings
The Windows Time registry locations and values most often seen during configuration and troubleshooting.
Group Policy Settings
The main Windows Time policies and the effect of configuring them centrally.
Stratum
A short explanation of how NTP stratum works and how it relates to Windows and Active Directory.
Polling Intervals
How Windows determines when to request another time sample.
Ports and Protocols
The network and local interfaces used by Windows Time, NTP, GPSD and Chrony.
Windows Version Notes
Links to the Microsoft documentation covering supported accuracy, traceability and release-specific behaviour.