Joe, a user, reports that each time his laptop is logged in to the company's headquarters, his system time changes. After Joe returns home, he adjusts the clock, which stays set correctly until the…

If the domain time controller were broadcasting incorrect time, all domain-joined machines would be affected, not just Joe's laptop.

A firmware (BIOS/UEFI) update addresses hardware-level bugs and would not resolve a time zone display discrepancy.

Malware is unlikely when the behavior is consistent, reproducible at a specific location, and no other symptoms are present.

Windows domain members synchronize time with the domain controller using UTC as the base. If the laptop's time zone is set incorrectly (e.g., set to a zone that matches headquarters rather than Joe's home location), the clock will appear correct at headquarters but wrong at home, and vice versa. Correcting the time zone setting resolves the issue permanently without affecting other users.