w32tm [/? | /register | /unregister ]
? - this help screen.
register - register to run as a service and add default
configuration to the registry.
unregister - unregister service and remove all configuration
information from the registry.
w32tm /monitor [/domain:<domain name>]
[/computers:<name>[,<name>[,<name>...]]]
[/threads:<num>] [/ipprotocol:<4|6>] [/nowarn]
domain - specifies which domain to monitor. If no domain name
is given, or neither the domain nor computers option is
specified, the default domain is used. This option may be
used more than once.
computers - monitors the given list of computers. Computer
names are separated by commas, with no spaces. If a name is
prefixed with a '*', it is treated as an AD PDC. This option
may be used more than once.
threads - how many computers to analyze simultaneously. The
default value is 3. Allowed range is 1-50.
ipprotocol - specify the IP protocol to use. The default is
to use whatever is available.
nowarn - skip warning message.
w32tm /ntte <NT time epoch>
Convert a NT system time, in (10^-7)s intervals from 0h 1-Jan 1601,
into a readable format.
w32tm /ntpte <NTP time epoch>
Convert an NTP time, in (2^-32)s intervals from 0h 1-Jan 1900, into
a readable format.
w32tm /resync [/computer:<computer>] [/nowait] [/rediscover] [/soft]
Tell a computer that it should resynchronize its clock as soon
as possible, throwing out all accumulated error statistics.
computer:<computer> - computer that should resync. If not
specified, the local computer will resync.
nowait - do not wait for the resync to occur;
return immediately. Otherwise, wait for the resync to
complete before returning.
rediscover - redetect the network configuration and rediscover
network sources, then resynchronize.
soft - resync utilizing existing error statistics. Not useful,
provided for compatibility.
w32tm /stripchart /computer:<target> [/period:<refresh>]
[/dataonly] [/samples:<count>] [/packetinfo] [/ipprotocol:<4|6>] [/rdtsc]
Display a strip chart of the offset between this computer and
another computer.
computer:<target> - the computer to measure the offset against.
period:<refresh> - the time between samples, in seconds. The
default is 2s
dataonly - display only the data, no graphics.
samples:<count> - collect <count> samples, then stop. If not
specified, samples will be collected until Ctrl-C is pressed.
packetinfo - print out NTP packet response message.
ipprotocol - specify the IP protocol to use. The default is
to use whatever is available.
rdtsc - display the TSC values and time offset data in CSV format.
The output displays TSC and FILETIME values captured before the
NTP request is sent, TSC value after an NTP response is received
along with NTP roundtrip and time offset values.
w32tm /config [/computer:<target>] [/update]
[/manualpeerlist:<peers>] [/syncfromflags:<source>]
[/LocalClockDispersion:<seconds>]
[/reliable:(YES|NO)]
[/largephaseoffset:<milliseconds>]
computer:<target> - adjusts the configuration of <target>. If not
specified, the default is the local computer.
update - notifies the time service that the configuration has
changed, causing the changes to take effect.
manualpeerlist:<peers> - sets the manual peer list to <peers>,
which is a space-delimited list of DNS and/or IP addresses.
When specifying multiple peers, this switch must be enclosed in
quotes.
syncfromflags:<source> - sets what sources the NTP client should
sync from. <source> should be a comma separated list of
these keywords (not case sensitive):
MANUAL - sync from peers in the manual peer list
DOMHIER - sync from an AD DC in the domain hierarchy
NO - sync from none
ALL - sync from both manual and domain peers
LocalClockDispersion:<seconds> - configures the accuracy of the
internal clock that w32time will assume when it can't acquire
time from its configured sources.
reliable:(YES|NO) - set whether this machine is a reliable time source.
This setting is only meaningful on domain controllers.
YES - this machine is a reliable time service
NO - this machine is not a reliable time service
largephaseoffset:<milliseconds> - sets the time difference between
local and network time which w32time will consider a spike.
w32tm /tz
Display the current time zone settings.
w32tm /dumpreg [/subkey:<key>] [/computer:<target>]
Display the values associated with a given registry key.
The default key is HKLM\System\CurrentControlSet\Services\W32Time
(the root key for the time service).
subkey:<key> - displays the values associated with subkey <key>
of the default key.
computer:<target> - queries registry settings for computer <target>.
w32tm /query [/computer:<target>]
{/source | /configuration | /peers | /status}
[/verbose]
Display a computer's windows time service information.
computer:<target> - query the information of <target>. If not
specified, the default is the local computer.
source: display the time source.
configuration: display the configuration of run-time and where
the setting comes from. In verbose mode, display the undefined
or unused setting too.
peers: display a list of peers and their status.
status: display windows time service status.
verbose: set the verbose mode to display more information.
w32tm /debug {/disable | {/enable /file:<name> /size:<bytes> /entries:<value>
[/truncate]} }
Enable or disable local computer windows time service private log.
disable: disable the private log.
enable: enable the private log.
file:<name> - specify the absolute filename.
size:<bytes> - specify the maximum size for circular logging.
entries:<value> - contains a list of flags, specified by number and
separated by commas, that specify the types of information that
should be logged. Valid numbers are 0 to 300. A range of numbers
is valid, in addition to single numbers, such as 0-100,103,106.
Value 0-300 is for logging all information.
truncate: truncate the file if it exists.
w32tm /leapseconds /getstatus [/verbose]
Display the status of leap seconds on the local machine.
verbose: Set the verbose mode to display more information.
w32tm /ptp_monitor [/duration:<seconds>]
Monitor the network for PTP traffic and print the status.
This command communicates through PTP UDP ports 319 and 320 on all network interfaces of the local machine
and uses PTP provider registry settings for comparison purposes or as defaults.
Please ensure firewall and PTP settings are in place and PTP time provider is stopped before running this command.
duration: Specifies the monitoring duration or defaults to 90 seconds.