Hello,
Thank you for posting in Q&A forum.
When the prompt "some settings are hidden or managed by your organization" appears in the date and time settings of Windows, it is usually due to certain restrictions set by the system administrator or group policy. To solve this problem, you can try the following methods:
Check user group policy:
If your computer belongs to a domain, the system administrator may have restricted date and time settings through group policy. In this case, you need to contact your network administrator or IT support team for assistance.
Create a new local user account:
Sometimes, some restrictions are applied to specific user accounts. Try creating a new local user account and see if it is possible to change the date and time settings on the new account.
Hope this answer can help you well.
Best regards,
Jill Zhou