Select an AppID for this DCOM or COM+ class from the list of AppID names that you have already created for this file's registration.

An AppID is a GUID registered under HKEY_CLASSES_ROOT\AppID used for grouping all of the security and configuration options of distributed COM objects.

To create a new AppID, you will need to use the Direct Editor (available under Advanced Views). Navigate to the AppID table and enter the information for your new AppID. Once you have created an AppID, you can select it from the drop-down list in this property.

To permanently delete an AppID, you will need to go back into the Direct Editor and delete that row from the AppID table.