Policy
Turn on Mapper I/O (LLTDIO) driver
Microsoft Windows
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista
This policy setting changes the operational behavior of the Mapper I/O network protocol driver. LLTDIO allows a computer to discover the topology of a network it's connected to. It also allows a computer to initiate Quality-of-Service requests such as bandwidth estimation and network health analysis. If you enable this policy setting, additional options are available to fine-tune your selection. You may choose the "Allow operation while in domain" option to allow LLTDIO to operate on a network interface that's connected to a managed network. On the other hand, if a network interface is connected to an unmanaged network, you may choose the "Allow operation while in public network" and "Prohibit operation while in private network" options instead. If you disable or do not configure this policy setting, the default behavior of LLTDIO will apply.
Registry values
How enabled and disabled states update the registry.
| Scope | Registry location | Type | Enabled value | Disabled value | Copy |
|---|---|---|---|---|---|
| Computer | Path Software\Policies\Microsoft\Windows\LLTD Value name EnableLLTDIO | REG_DWORD | HKLM 1 | HKLM 0 |
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
| Computer | Allow operation while in domain ID LLTD_EnableLLTDIO_AllowOnDomain | boolean | Path Software\Policies\Microsoft\Windows\LLTD Value name AllowLLTDIOOnDomain Type REG_DWORD | Options: true (1), false (0) True: Set value = 1 · False: Set value = 0 | |
| Computer | Allow operation while in public network ID LLTD_EnableLLTDIO_AllowOnPublicNet | boolean | Path Software\Policies\Microsoft\Windows\LLTD Value name AllowLLTDIOOnPublicNet Type REG_DWORD | Options: true (1), false (0) True: Set value = 1 · False: Set value = 0 | |
| Computer | Prohibit operation while in private network ID LLTD_EnableLLTDIO_ProhibitOnPrivateNet | boolean | Path Software\Policies\Microsoft\Windows\LLTD Value name ProhibitLLTDIOOnPrivateNet Type REG_DWORD | Options: true (1), false (0) True: Set value = 1 · False: Set value = 0 |