Hi,
For more details about the effect in your computer, I suggest you could refer to the Doc: Change the system time - security policy setting
And you need you need certain privileges in Windows to alter the time, so if you do not have those privileges, then you need to get the Administrator to give you more rights. For example, when you try to use SetSystemTime function, you should have the SE_SYSTEMTIME_NAME privilege.
Best Regards,
Jeanine
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