how to sync windows time from a ntp time server in command

Question

I am working on windows 7. I can sync time of win7 from a ntp linux server manually. How can I do that in command prompt. So I can run it on windows startup. And windows task plan not work for me. The time should be like this:

Linux server -->  windows 7.

Any one knows that? Thank you. I can read msdn.

Schmeltzer

Answer 1

Use net time net time \\timesrv /set /yes

after your comment try this one in evelated prompt :

w32tm /config /update /manualpeerlist:yourtimerserver

Stores

service not start @Kayasax I have run sc start w32time. Windows time service already started. – Schmeltzer

It runs successfully without error. But time was not change. When I run time /t. It make me crazy. @Kayasax – Schmeltzer

Is there exists a delay? @Kayasax – Schmeltzer

It will not change other machine in local network and domain, right? – Schmeltzer

nope, except if you do that on your domain time server – Mending

My machine is client. Not domain server. and not time server. – Schmeltzer

Oh my god. It changes now. Thank you. – Schmeltzer

@Kayasax w32tm /resync says "The computer did not resync because the required time change was too big." as my CMOS battery is dead and my computer clock resets on every boot at 1/1/2000 12:00 AM. Any help? – Corruptible

@Kayasax Found solution as per blog.bruteforcetech.com/archives/911 , do not forget to restart W32Time service net stop W32Time then retry w32tm /resync – Corruptible

Also if you are on a VM turn off the VMICTimeProvider with the following registry tweak! serverfault.com/a/490619/169771 – Ioved

Answer 2

net stop w32time
w32tm /config /syncfromflags:manual /manualpeerlist:"0.it.pool.ntp.org 1.it.pool.ntp.org 2.it.pool.ntp.org 3.it.pool.ntp.org"
net start w32time
w32tm /config /update
w32tm /resync /rediscover

.BAT Sample File: https://gist.github.com/thedom85/dbeb58627adfb3d5c3af

I also recommend this program: http://www.timesynctool.com/

Mosira

Solved my problem thanks. I have a workstation that is domain joined so time settings "Are managed by your organisation" but is is being used away from the domain at the moment. – Bumkin

Answer 3

If you just need to resync windows time, open an elevated command prompt and type:

w32tm /resync

---

C:\WINDOWS\system32>w32tm /resync 
Sending resync command to local computer 
The command completed successfully.

Antineutrino

Answer 4

While the w32tm /resync in theory does the job, it only does so under certain conditions. When "down to the millisecond" matters, however, I found that Windows wouldn't actually make the adjustment; as if "oh, I'm off by 2.5 seconds, close enough bro, nothing to see or do here".

In order to truly force the resync (Windows 7):

1. Control Panel -> Date and Time
2. "Change date and time..." (requires Admin privileges)
3. Add or Subtract a few minutes (I used -5 minutes)
4. Run "cmd.exe" as administrator
5. w32tm /resync
6. Visually check that the seconds in the "Date and Time" control panel are ticking at the same time as your authoritative clock(s). (I used watch -n 0.1 date on a Linux machine on the network that I had SSH'd over into)

--- Rapid Method ---

1. Run "cmd.exe" as administrator
2. net start w32time (Time Service must be running)
3. time 8 (where 8 may be replaced by any 'hour' value, presumably 0-23)
4. w32tm /resync
5. Jump to 3, as needed.

Atkinson