INF RegisterDlls directive
Caution
Starting in Windows 11 version 22H2, a driver package using this directive is no longer eligible for a signature from Hardware Developer Center.
Universal driver packages and Windows Drivers cannot use this directive.
Note
You can use the Reg2inf tool to convert existing INF RegisterDlls directives into INF AddReg directives in order to make a driver package Universal.
A RegisterDlls directive references one or more INF sections used to specify files that are OLE controls and require self-registration.
[DDInstall]
RegisterDlls=register-dll-section[,register-dll-section]...
Each INF section referenced by a RegisterDlls directive must have the following entry format:
[register-dll-section]
dirid,[subdir],filename,registration-flags[,[timeout][,argument]]
A register-dll-section can have any number of entries, each on a separate line.
Entries
dirid
Specifies the destination directory ID of the file to be registered. For more information, see Using Dirids.
subdir
Specifies the directory path, relative to the current directory, to the file to be registered. If not specified, the file is in the current directory.
filename
Identifies the file name of the OLE control to be registered.
registration-flags
Indicates the registration operations to perform on the OLE control. One or both of the following flags must be specified.
0x00000001 (FLG_REGSVR_DLLREGISTER)
Call the OLE control's DllRegisterServer function (described in the Windows SDK documentation).
0x00000002 (FLG_REGSVR_DLLINSTALL)
Call the OLE control's DllInstall function (described in the Windows SDK documentation).
timeout
Specifies the time-out, in units of seconds, for an OLE Control to complete the specified registration calls. The default time-out is 60 seconds.
argument
If the control is an executable file, this is a command string that is passed to the executable. The default argument is /RegServer.
If the control is not an executable file, this specifies the command-line argument to pass to the DllInstall function.
Remarks
Each register-dll-section name must be unique to the INF file and must follow the general rules for defining section names. For more information about these rules, see General Syntax Rules for INF Files.
The following rules apply to the use of the RegisterDlls directive for device installations:
Although the syntax permits filename to be either a DLL or an executable file, for device installations only a DLL is allowed.
The code to be registered must not prompt for user input.
Server-side installations execute in a system context. Therefore, you must be very sure that the code being registered contains no security vulnerabilities and that file permissions prevent the code from being maliciously modified.
For more information about OLE controls and self registration, see the Windows SDK documentation.
Examples
[Dialer]
RegisterDlls = DialerRegSvr
[DialerUninstall]
UnregisterDlls = DialerRegSvr
[DialerRegSvr]
11,,avtapi.dll, 1