Loopback policy can be used in special computer scenario, such as for schools, reception areas, or other zones whrere it is important that no matter who logs on, the computer settings must always remain in the same secured sate. Since user settings are applied after computer settings in the application order, GPO’s allow you to enable a Loopback policy settings to ensure that computer settings are reapplied instead of or along with user settings.
By default, users settings override computer settings in case of any conflict in policy settings. By configuring Loopback policy setting, an administrator can reverse the process of the application of policies. When the Loopback policy option is configured, the computer settings take precedence on the users settings. The Loopback policy option can be set as Not Configured, Enabled, or Disabled. The enabled Loopback option can be set in the following two modes:
o Replace mode: In this mode, the computer policy settings override the user policy settings.
o Merge mode: In this mode, the computer policy settings are appended to the user policy settings
Configure Loopback policy
Use the GPMC to create a new policy or user the existing policy to configure the below setting for Loopback policy
Computer configuration -> Administrative Templates -> System/Group policy
User Group policy loopback processing – Enable
Mode – Replace / Merge