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EWilson380's avatar
EWilson380
Iron Contributor
Aug 17, 2025

Windows 11, Windows 10 Windows To Go (external SSD) wrong time

Always when i go from Windows 10 on external SSD (Windows To Go) in Windows 11 on internal NVMe SSD my system clock are wrong (2 hours ahead or behind) and i always need to change time. Time Zone are the same in both OS's.

1 Reply

  • Gabrielors's avatar
    Gabrielors
    Iron Contributor

    That happens because Windows 10 and Windows 11 are storing the hardware clock differently:

    One is treating it as local time, the other as UTC.

    When you swap between the two systems, the clock jumps by a few hours.

    Fix (pick one):

    In Windows 10/11, run regedit → go to
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation
    → create a DWORD (32-bit) value called RealTimeIsUniversal and set it to 1.
    (This makes Windows use UTC like Linux/macOS.)

    Or just disable automatic time sync and set time manually, but that’s less reliable.

    👉 The registry tweak is the clean solution — then your clock will stay correct when switching between Windows 10 To Go and Windows 11.

    Want me to give you the exact .reg file you can double-click to apply the fix directly?

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