I am having a hard time trying to solve this issue. Recently I created a GPO on a Win2k8 R2 domain controller to set the screen to lock after 30 minutes.
The settings are then applied to a security group which contains all the relevant users.
However on some of the Windows 7 Pro machines the timeout is firing after just 4 minutes. I have checked the workstation to see that the GPO is being pulled through correctly (which it is). I have checked the registry settings to see that the GPO has been applied (which it is), I have also checked to see that the power managment is not interferring with the lockout with its own schedule (which it is not).
I have ran gpupdate /force on the affecting machines but I am still not having any joy either.
Has anyone come across this issue before or could offer a possible reason why the lockscreen is firing 26 minutes earlier than it should?