Windows 10 does not receive mDNS response

Question

Hi,

I have windows 10 enterprise OS version 22H2 (OS build 19045.4291)

I am currently testing the mDNS (Multicast DNS) feature on my device (Nucleao_STM32U575ZI_Q development board), which is connected to my Windows 10 Enterprise laptop via WiFi. Device act as a Access point and Laptop as a station.

The issue I am encountering is that when I send a request from my laptop to the device, the device send a response but the laptop does not capture it, it captures the response when I toggle IPv6 setting in WiFi properties. Interestingly, when I tested the same scenario using windows 11. it worked as expected without any setting changes.

Windows 10 system details:

OS: Windows 10 enterprise OS version 22H2 (OS build 19045.4291)

WiFi driver description: Intel(R) Wi-Fi 6E AX211 160MHz

WiFi driver version: 22.240.0.6

Windows 11 system details:

OS: Windows 11 enterprise OS version 22H2 (OS build 22621.3447)

WiFi driver description: Intel(R) Wi-Fi 6 AX201 160MHz

WiFi driver version: 22.40.0.7

I am seeking advice on resolving the mDNS issue on windows 10. Any insights or suggestions?

***moved from Windows / Windows 10 / Settings ***

Answer 1

Hello,

According to my understanding, I suggest you first check whether the mdns function is turned on on your computer.

You can do this by following these steps:

Click Windows+R and enter regeidt

Find HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient\

Find mDNSEnabled and change the value to 1.

If not, create a DWORD value, name it mDNSEnabled, and change the value to 1.

Finally restart the computer.

Best regards

Zunhui

Answer 2

Hi Zunhui,

Thank you for your prompt response!

EnableMulticast DWORD is present as shown in below image. value is "0".

My windows 11 system is also having same DWORD name and value.

I did some experiments with this value, please check the following steps and results:

1. Change EnableMulticast value to "1" and restart the computer
2. Ping to the device using hostname is successful after restart.
3. Reconnect WiFi
4. Ping to the device using hostname, Ping is failed, computer does not receive the response from device.
5. Change EnableMulticast value to "0" and restart the computer
6. Ping to the device using hostname is successful after restart.
7. Reconnect WiFi
8. Ping to device using hostname, Ping is failed, computer does not receive the response from device.

Hence, my observation is that computer is receiving response from the device, when I change value of EnableMulticast and restart the computer.

Answer 3

Hi Vineeta Narkhede,

I recommend that you open the Group Policy Editor on your Windows 10 computer and check whether the following policy is enabled. If so, you need to disable it manually.

Best regards

Zunhui

Answer 4

Hi Zunhui,

I am trying to get help from our security team who has access to group policy.

However, on my personal laptop there is no group policy applied, I checked using the command "gpresult /Scope User /v"

On my personal laptop also I face same issue where mDNS response is not received from the device.

Details of my personal laptop:

OS: Windows 10 Home OS version 22H2 (OS build 19045.4170)

WiFi driver description: Intel(R) Dual Band Wireless-AC 3168

WiFi driver version: 19.51.30.1

Best Regards,

Vineeta

Answer 5

> Find HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\DNSClient\

I have no folder DNSClient\ under Windows NT. The only folder is Client.

I did a search for DNSClient and it came back with nothing.