Windows 2000 allows local users to prevent the application of new group policy settings by opening Group Policy files with exclusive-read access.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A38
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-0051
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-016