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Turn on Mapper I/O (LLTDIO) driver

GPO PowerShell Regedit CMD

In PowerShell we can use Get-GPRegistryValue cmled to identify the registry key(s) associated with:

More information about Get-GPRegistryValue can be found on this link:


For Enabled we get:


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.

Supported on:

At least Windows Vista

For Disabled we get: