Have you been getting your Windows updates? As a chronic "I'll do it later" Windows user, I always tend to hold off for a little too long before going through the painstaking work of waiting ten minutes for an update. Though Windows update 24H2—the most current version of the OS—has fixed many problems, it seems there is still a fairly strange bug where you can't change the date and time of your device in Windows settings.
In the "known issues and notifications" page of the current build, one issue was updated just this week. "Date & Time in Window Settings might not permit users to change time zone" has been an ongoing issue that has since been "mitigated" with a recent bug fix.
