3.2.1.24 Extension List
The list of Group Policy client-side extensions present in the local machine. The Extension List is in ascending order by CSE GUID. The following information MUST be maintained for each extension:
CSE GUID
Implementation Identifier: A string that uniquely identifies the implementation-specific reification of the CSE GUID.
MaxNoGPOListChangesInterval: An integer value that SHOULD<15> specify the maximum number of minutes to skip the extension when the policy has not changed.