I have an OU that, including inheritance, has four GPOs applied. There is the default domain policy, linked at the domain level, two more policies with generic settings for our SOE, and finally, a GPO linked to the OU that contains the computers in question.
This last GPO contains some settings that override settings contained in the standard SOE GPO; namely, our standard is to have the screensaver enabled, require UN/PW to unlock, and to automatically start after 300 seconds. The workstations in this OU require the screensaver to be permanently disabled.
Looking in inheritance, the GPO which disables the screensaver has a priority of one. However, the screensaver is still coming on. When I run a results wizard, I see that these settings are being applied and the winning GPO is one of the SOE GPOs, linked at a parent OU and showing a lower precedence in inheritance. None of these GPOs are enforced, no links or GPOs are disabled (in fact other settings from this GPO are being successfully applied).
How do I even begin to troubleshoot this? I'm not seeing any errors, everything appears as it should be.
UPDATE: Sorry should have mentioned this originally. These settings ARE applied to the computers' OU, not the users, and they do have loopback processing enabled. The reason for this is that these workstations must not have the screensaver come on, regardless of who logs on. The same applies to the workstations elsewhere; we can't apply these settings to the user OUs because it's not relevant which user logs on, the location of the workstation is what's important (e.g public area, secure area, area which critically depends on not having the screensaver come on).
UPDATE2: The loopback mode on both GPOs is set to Merge. This is required as there are other GPOs applied to the user OUs which we require.