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

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?