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But the time quickly reset to UTC by next day.įinally I confirmed my Windows Time Server and client machine Time Services were working properly using W32TM. I also used it to set the Time Zone on my effected clients. Next I used TZUTIL to confirm my Time Zone was correct. Both sets of clients confirmed that DHCP was not pushing the Options out to anyone and that DHCP seems to be working DHCPTest also confirms that DHCP is working properly as part of its testing. Server and that they were not still being pushed out somehow. This was to confirm that I had successfully removed the DHCP Options from my This tool outputs every option that your DHCP server is presenting to DHCP clients. However I started to collect some additional diagnostic information fromīoth desktops that were experiencing the issue and those that were behaving normal.įirst I queried DHCP using a tool I found online called DHCPTest on both good and bad clients. It was contained to just this handful of users. I was pretty certain that my Windows time server was working properly because none of my other users/desktops were reporting this issue. \\HKLM\CurrentControlSet\Control\TimeZoneInformation\īut again by the next day, all my effected users reported the issue again. I tried manually setting the Time Zone in the registry here: And my Time zone seemed to be holding at Atlantic time however the next day, my same pool of users all reported their time had reverted back to UTC. So thinking that this was where the DHCP options were hiding out I deleted the key, cleared However research indicated that this gets repopulated when you get a DHCP lease. ![]() However the value is stored in Binary and is unreadable and apparently undocumented. \\HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\\DHCPInterfaceOptions\ I did some research and I found where DHCP stores its Options in the Registry: Rebooting does nothing to cure this, in fact doing so seems to reset the Time Zone back to UTC. I tried to manually reset the Time zone to our correct time zone "(UTC-04:00) Atlantic Time (Canada)" from the GUI for the effected users but a few hours later the time I looked in Date
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