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Colencm's avatar
Colencm
Copper Contributor
Nov 04, 2026

How come the clock is wrong by exactly one hour after every update?

Ever since installing Windows updates, my computer's clock keeps showing the wrong time by exactly one hour after every update, even though it was correct before restarting. I have checked the date and time settings, and automatic time synchronization is enabled, but the problem keeps coming back whenever Windows installs new updates. Has anyone else experienced this issue, and what could be causing it?

1 Reply

  • LauraBennett's avatar
    LauraBennett
    Iron Contributor

    An exact one-hour difference usually points to time-zone or daylight-saving rules, rather than failed time synchronisation. Windows can synchronise correctly and still display the wrong local time.

    Under Settings > Time & language > Date & time, keep Set time automatically enabled, but temporarily turn off Set time zone automatically and manually select the correct zone for your location. Check the daylight-saving option too, if available, then click Sync now.

    After the next restart, check whether the selected time zone changed or whether only the displayed time changed. If the zone keeps reverting, location detection, an organisation policy or a manufacturer utility may be resetting it.

    Don’t manually subtract or add an hour to compensate. If the correct zone and daylight-saving settings remain unchanged but the error returns, record the Windows build and update KB number so it can be checked against a specific update issue.