Press the Windows key + R together to open the Run command.Follow these steps to prevent specific user or even administrators from changing date and time in Windows 10 / 8 / 7 / Vista / XP. How to Prevent Windows Users from Changing Date and Time?īy default, only administrative accounts are able to change the system time. How to block access to changing the time for Windows 10? Is there a way to lock the system date and time on a public or shared computer? Here’s how to use group policy to prevent users from changing date and time in Windows 10 / 8 / 7 / Vista / XP.