AppID Key

Groups the configuration options, a set of named values, for one or more distributed COM objects into one centralized location in the registry. Distributed COM objects hosted by the same executable are grouped into one AppID to simplify the management of common security and configuration settings. The HKEY_LOCAL_MACHINE\SOFTWARE\Classes key corresponds to the HKEY_CLASSES_ROOT key, which was retained for compatibility with earlier versions of COM.

Registry Entry

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\
{AppID_value}\named_value = value

Comments

AppIDs are located in a newly created registry key hierarchy. The AppID_value is a 128-bit Globally Unique Identifier (GUID) that identifies the AppID key.

AppIDs are mapped to executables and classes using two different mechanisms:

• Classes indicate the corresponding AppID under the CLSID key in a named-value "AppID" of type REG_SZ. This contains the string value corresponding to the AppID_value under the AppID key. This mapping is used during activation.
• Executables are registered under the AppID key in a named value indicating the module name (such as "MYOLDAPP.EXE"). This named value is of type REG_SZ and contains the string representation of the AppID associated with the executable. This mapping is used to obtain the default access permissions.

Named Values:

RemoteServerName = value

Sets name of remote server

ActivateAtStorage = value

Configures client to activate on same system as persistent storage

LocalService = value

Sets the application as a Win32 service

ServiceParameters = value

Sets parameters to be passed to a LocalService on invocation

RunAs = value

Sets an application to run only as a given user.

LaunchPermission = value

Sets an ACL that determines who can launch the application

AccessPermission = value

Sets an ACL that determines access

DllSurrogate = path

Specifies that a DLL server is to use a surrogate EXE file. If path is not specified, system-provided surrogate is used

AuthenticationLevel = value

Sets the authentication level for the AppID, overriding LegacyAuthenticationLevel

See Also

CLSID key, OLE Registry Entries, Registering COM Servers