.ADM File Extension
File Type 1Administrative Template File
What is an ADM file?
Template used by Microsoft Group Policies that describes where registry-based policy settings are stored in the registry; also defines the user interface that administrators see in the Group Policy Object Editor when creating or modifying Group Policy objects (GPOs)
File Type 2Portfolio Admin-Level Access Flag
.ADM File Association 2
File created when an Extensis Portfolio Catalog (.FDB file) is open in admin mode; should be automatically deleted when the Catalog is closed, but may be deleted manually if the file is not removed after closing the Catalog.