What Does Microsoft Multiplexor Protocol Do

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Thank you for posting in Microsoft Community. Do let us know, what is the exact issue you are facing with Microsoft Network Adapter Multiplexor Protocol? The Microsoft Network Adapter Multiplexor Protocol service is a kernel mode driver. The protocol is installed by default as part of the physical network adapter initialization for the first time.

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  1. Microsoft Network Adapter Multiplexor Driver Driver for Windows 7 32 bit, Windows 7 64 bit, Windows 10, 8, XP. Uploaded on 3/25/2019, downloaded 3837 times, receiving a 91/100 rating by 2107 users.
  2. The Microsoft Network Adapter Multiplexor protocol is checked in the teamed network adapter and unchecked in the physical network adapters that are part of the NIC Teaming. For example, if there are two physical network adapters in a team, the Microsoft Network Adapter Multiplexor protocol will be disabled.

If you have gone through the internet, you may discover there is very little offering explanation to the Microsoft Network Adapter Multiplexor Protocol.

My first challenge with this protocol was after I did an upgrade from Windows 8.1 to 10. I had no connectivity and noticed that all my protocols were unchecked. To regain connectivity I turned them back all on.

If you have ever been in my shoes, you should know turning them back all on will never be possible. all I got was that my selection will cause Microsoft Network Adapter Multiplexor Protocol to be disabled.

To save you this trouble in the future, I will just say turn every other thing on and live the multiplexor protocol. Your connection will work just fine.

What is the Microsoft network adapter multiplexor protocol

It is basically a kernel mode driver used for Network Interface Card (NIC) bonding. By default, the protocol is installed as part of the physical network adapter initialization.

The one essence of this protocol is for NIC teaming. NIC Teaming often referred to as Load Balancing/Failover (LBFO), allows you to install additional physical Ethernet network adapters (NICs) into your server and “team” or combine them together to make one virtual NIC that provides better performance and fault tolerance.

Uses of the Microsoft network adapter multiplexor protocol

The one time the Microsoft Network Adapter Multiplexor protocol is checked is in the teamed network adapter while it remains unchecked in the physical network adapters that are part of the NIC Teaming.

For example, if there are two physical network adapters in a team, the Microsoft Network Adapter Multiplexor protocol will be disabled for these two physical network adapters and checked in the teamed adapter.

This driver is used for two scenarios in teaming. Both of these scenarios require at least two connected network adapters on a single PC.

Scenario 1 (Adapter teaming): This is using two or more adapters at the same time. Doing this allows one to send and receive more packets than a single adapter could.

Scenario 2 (Adapter failover/high availability): This simply means there is a standby adapter that takes over the network connection if the primary fails.

If you only have one adapter on your PC hooked up as is the likely case with your client OS enabling this protocol will result in Windows disabling it automatically as soon as it figures out you can’t team multiple adapters to work together on your PC.

Conclusion

What Does Microsoft Network Adapter Multiplexor Protocol Do

This capability was introduced with Windows Server 2012 and remains more a server-side protocol than client based. It may not be needed even in windows 10.

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Active4 years, 4 months ago

I need to campus-wide disable the Microsoft LLDP Protocol Driver using Group Policy / SCCM / or any other means of centralized management, because I've written my own LLDP broadcast service I plan on using instead of the crippled MS implementation.

I tried googling but wasn't able to come up with a working solution.

EDIT:I took two registry snapshots and compared them, the three keys that change when the checkbox is toggled are located under

The keys are Bind / Route / Export

The problem is when these keys are deleted / emptied, the checkbox turns itself back on.

HopelessN00b
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lightxxlightxx

1 Answer

Alright.

Use the Windows 'Add printer' wizard instead.- Dov. For other 32-bit versions of Windows, the installer either fails or yields incorrect results. Install postscript printer windows 10. It does not work at all with any 64-bit version of Windows.There is no intention to release any newer versions of the Adobe Universal PostScript Windows Driver Installer.

What Does Microsoft Multiplexor Protocol Do You Need

I just deleted the entire

key and while that turned the check box on again, Windows actually stops sending LLDP PDUs (confirmed that using Wireshark)

lightxxlightxx

Adapter Multiplexor Protocol

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