|To disable a Group Policy object link|
In the Group Policy Management Console (GPMC) console tree, double-click to expand the forest containing the domain, site, or organizational unit (OU) containing the link you want to disable, and then do one of the following:
Right-click the GPO link. A check mark next to Link Enabled indicates that the link is enabled.
Click Link Enabled to disable the link. No check mark will be displayed when the link is disabled.
You must have Link GPOs permission for the domain, site, or OU to complete this procedure.
You can also click the GPO link and look at the information in the Links section of the Scope tab to determine if a GPO link is enabled.