ServiceDiscovery not working on WiFi connection

[Trawacho]

Hello,
using this lines of code

[TestMethod]
public void DiscoverServiceInstanceRemote()
    {
        var service = new ServiceProfile("bar", "_foo._tcp", 4711);
        var done = new ManualResetEvent(false);
        var sd = new ServiceDiscovery();
        sd.ServiceInstanceDiscovered += (s, e) =>
        {
            if (e.ServiceInstanceName == service.FullyQualifiedName)
            {
                Assert.IsNotNull(e.Message);
                done.Set();
            }
        };
        try
        {
            sd.QueryServiceInstances(service.ServiceName);
            Assert.IsTrue(done.WaitOne(TimeSpan.FromSeconds(5)), "instance not founde");
        }
        finally
        {
            sd.Dispose();
        }
    } 

are working pretty fine as long as the machine is connected via cable. As soon as I switch to Wifi it doesn´t.
What I´m doing wrong?

[twofingerrightclick]

I am experiencing this as well. I cannot advertise or discover over my Wi-Fi Interface. Tested with the example programs in the repo ("Spike"). Windows 10, Visual Studio 2022.
Works fine over the ethernet interface, but if I unplug then no traffic.

[Christanoid]

I had the same issue for a while. My solution was that Windows automatically set the WiFi to public instead of private which in turn blocks mdns. Go to Settings => Network and Internet and then on the top it should tell you what kind of network it thinks you have.

[twofingerrightclick]

@Christanoid Thank you! That makes so much sense. I think that should close this issue.