History Window

The history of a Group Policy Object (GPO) can be displayed by double-clicking a GPO or by right-clicking a GPO and then clicking History. It is also displayed in the Group Policy Management Console (GPMC) as a tab for each GPO.

The history provides a record of events in the lifetime of the selected GPO. From the History window, you can obtain a report of the settings within a version of the GPO, compare multiple versions of a GPO, or roll back to a previous version of a GPO.

Filtering events in the History window

The tabs within the History window filter the states in the history of the GPO.

Tabs Filtering

All States

Display all states in the history of the GPO.

Unique Versions

Display only unique versions of the GPO checked into the archive. The version deployed to the production environment, shortcuts to unique versions, and informational states are omitted from this list.

Event information

Information is provided for each state in the history of the GPO.

GPO attribute Description

Change Date

Time stamp of when the action in the State column was performed.

State

A state in the history of the GPO.

Changed By

The person who checked in or deployed the GPO.

Comment

A comment entered by the person who checked in or deployed a GPO at the time that this version was modified. Useful for identifying the specifics of the version in case of the need to roll back to a previous version.

Deletable

Whether this version of the GPO can be deleted if the number of unique versions of each GPO retained in the archive is limited.

Note

You can modify whether a version of a GPO is deletable by right-clicking it and then clicking Do Not Allow Deletion or Allow Deletion.

Computer Version

Automatically generated version of the Computer Configuration portion of the GPO.

User Version

Automatically generated version of the User Configuration portion of the GPO.

GPO Status

The Computer Configuration and the User Configuration can be managed separately from each other. This status shows which portions of the GPO are enabled.

WMI Filter

Display any WMI filters that are applied to this GPO. WMI filters are managed under the WMI Filters folder for the domain in the console tree of the GPMC.

Reports

The Settings and Differences buttons display reports about GPO settings for the GPO version or versions selected. Right-clicking GPO versions provides the option to display XML-based reports as well.

Button Effect

Settings

Generate an HTML-based report displaying the settings within the selected version of the GPO.

Differences

Generate an HTML-based report comparing the settings within multiple selected versions of the GPO.

Key to difference reports

Symbol Meaning Color

None

Item exists with identical settings in both GPOs

Varies with level

[#]

Item exists in both GPOs, but with changed settings

Blue

[-]

Item exists only in the first GPO

Red

[+]

Item exists only in the second GPO

Green

  • For items with changed settings, the changed settings are identified when the item is expanded. The value for the attribute in each GPO is displayed in the same order that the GPOs are displayed in the report.

  • Some changes to settings may cause an item to be reported as two different items (one present only in the first GPO, one present only in the second), rather than as one item that has changed.

Additional references