After you set the exact date and time format, of course you do not want anyone else to replace the format. But this can happen at any time, especially if your PC is used by a lot of people.
Although Windows 10 does not offer the option to lock this setting, but fortunately you can still make use of the tips in this guide.
Prevent users from changing the date and time format in Windows
- Open Windows Run (Win + R), then type gpedit.msc to open the Group Policy Editor.
- Navigate to Computer Configuration> Administrative Templates> System> Location Services.
- In the right pane, click 2x on the language setting option, which does not allow users to override the language.
- Then select the On option to turn off the date and time formatting options. When you click OK to save the changes.
- Finally, you can restart Windows 10 to get the changes. Or if you want faster you can restart the Group Policy Editor by entering the following command via Command Prompt as Administrator.
gpupdate / force
Note: By default, Group Policy Editor is not included in the Windows 10 Home edition.
That way, it’s not possible to use the date and time format settings, on the Settings or Control Panel.