Windows Server 2012 R2 System Time cannot be changed
Disable Windows Time service ,a and set it to Manual
Disable Hyper-v Time Sync service , and set it to Manual
Make sure “Sync with Internet time ” option is unchecked.
After finishing the above 3 steps, you can change the system time and monitor
Try these steps fixing time error on serve 2012 setting time either backwards or forward by hours.
Open MSServer 2012
Windows + run to open
Type in Regedit
Or if open with admin rigths open the Apps > search tab, then click type in regedit, open as admin.
If prompted by the UAC click yes
Go to HKEY_LOCAL MACHINE\SYSTEM\CURRENT CONTROL SET\CONTROL\TIMEZONE INFORMATION.
Go to Active time bias - set value to 0
Go to bias set value to 0
Time zone key type/modif value to area
Make sure the daylight name responds to area e.g @tzres ; -411 ; Standard name is @tres.dll; -412
Close/restart server
opne cmd with admin rigths
run w32tm/tz utility to verify time bias. & date name
To disable daylight go to disable auto daylight
to disable auto daylight, open set value to 1.
Use nettime utility as below to align all domain computers to to the server as below.
open cmd with admin rights then type in the below
nettime/set/y