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I have a problem when my Windows 7 64-bit laptop is used during BST (British Summer Time)/ daylight saving periods.

Instead of the +1 shift in time, the system clock shifts +2 hours and can be a few minutes out from the NTP server time.

I've used all servers listed in the NTP server list - it makes no difference. I've just tried using pool.ntp.org, but I'm not convinced trying that is going to solve my problem, either.

From what I've seen, this is an issue that affects other Windows 7 users in other time zones, so it's not exclusive to GMT/BST users or users of a particular NTP server. My assumption is that it's something obscure in Windows 7 that's causing this issue.

Is there a fix for this issue? I've seen the issue described in questions and various articles online - but I haven't found a definite fix.

James
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2 Answers2

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Guessing blindly without hands-on:

First check Windows Update for any optional updates and install them all (using still some common-sense), especially if they relate to time in any way. Sometimes Microsoft needs to fix a bug with daylight saving. (I assume of course that all important updates have already been installed.)

Second, right-click on the clock and choose "Adjust date/time". Go to Internet Time / Change settings. Ensure that "Automatically synchronize with an Internet Time Server" has been checked. Click on OK. Go back to Change settings and press Update now.

Is the time now correct ?

If not, you could try to temporarily disable the Windows firewall and try again to adjust the time using the Update now button, to see if it now works. If the problem is the firewall, you will need to Configure Windows Firewall to allow time protocol.

You could also try pool.ntp.org, although the correct name is uk.pool.ntp.org .

As an extra check, boot into the BIOS and check if the time there is correct. If correcting the BIOS clock fixes the problem, then the Windows time-sync is not working (although the firewall is the only reason for it that I can think of).

If you are dual-booting between Windows 7 and a non-Windows operating-system, this could also cause time-synchronization problems.

harrymc
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I tried my manufacturer's OEM distribution of Win7 Ultimate, rather than a generic OEM version, having had to reinstall it. So far, I've not had the date jump ahead an hour! How odd.

James
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