: If your computer loses the correct time every time you reboot, your motherboard's CMOS battery likely needs replacement.
If your system clock rolls back to a historical date every time you shut down or unplug your PC, software-based fixes will not provide a permanent solution.
The most effective fix is forcing a synchronization with official time servers: Start > Settings > Time & Language > Date & Time "Set time automatically" "Set time zone automatically" are both toggled "Sync now" winols 47 your system date is wrong upd
If you are an ECU tuner, you know that WinOLS is the gold standard for engine mapping, checksum correction, and DAMOS handling. However, with version 4.7 (and the subsequent updates, or "UPDs"), a notorious error has plagued users across forums, Facebook groups, and tuning shops:
If your computer loses the correct time every time you reboot, your motherboard’s (usually a CR2032 button cell) may be dead. This causes the BIOS to reset to a factory date (e.g., 2000 or 2010), which WinOLS will immediately identify as "wrong". Replacing this battery is a permanent hardware fix. 4. Conflicts with Previous Installations : If your computer loses the correct time
: If Windows loses connection with its Network Time Protocol (NTP) servers, your OS clock can drift, confusing the software's background integrity checks.
If your computer loses the correct time every time you reboot or unplug it, your motherboard's CMOS battery (usually a CR2032 coin cell) may be dead. However, with version 4
Turn off "Set time automatically" in Windows Settings.
You will need to source an updated loader file or an "unlocked" installer that removed the hardcoded date limits from automotive tuning forums.
I can provide specific troubleshooting steps or recommend alternative workflows to get your tuning station back up and running.