[2019] PINNED: How to Sync Your Clock and Fix Error 9403

If you're encountering connection error code 9403 when attempting to play notmycar, the issue is most likely your PC's clock being slightly off. As an anti-cheat measure, your PC's clock must be synced to match our servers. Even if it's off by as much as a few seconds, you may encounter this error.

How to Fix Error 9403 on Windows 10

1. Open up the "Settings" app in Windows
   
2. Search for and open the "Time & date" settings
   
3. Locate the "Set time automatically" setting near the top and untick it
   
4. Wait a few seconds and then retick "Set time automatically"

This should force a sync with the Windows time servers and set you to the correct time. If it does not, make sure your time zone is set correctly and consider changing your time server via the Windows 7 instructions below.

How to Fix Error 9403 on Windows 7

1. Open up the "Control Panel" in Windows
   
2. Click on "Clock and Region", then "Date and Time"
   
3. In the new windows, go to the "Internet Time" tab
   
4. Click "Change settings..." then, next to the time server selection, click "Update now"

If your time fails to update with the 'time.windows.com' server, you may want to consider changing it to another option in the dropdown menu.