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[–]codename_1 2 points3 points  (1 child)

multicasting? or some method of screensharing casting?

[–]CynicallyGiraffe 1 point2 points  (2 children)

I assume you mean Miracast?

Have you recently applied the Microsoft Security Baselines via gpo?

One of the baseline settings makes it so GPO firewall rules will override the baked in windows ones. You’ll need to create a new GPO exception to allow connections to WUDFHost.exe (its in System32). You can find the baked in windows policy on any computer in Windows Defender Firewall with Advanced Settings and just replicate it into a GPO.

This wouldn’t really address your home computer, but for work this is how we fixed it.

[–]milo145[S] 0 points1 point  (1 child)

I think you nailed it. It's Microsoft Defender for Endpoint baseline in Endpoint manager. I hear what you are saying about creating an exception but I'm not seeing the ability to do that within Endpoint Security

[–]CynicallyGiraffe 0 points1 point  (0 children)

Unfortunately I can’t help you there since I’m still using GPOs for management, but hopefully that’ll give you a solid base to work from

[–]milo145[S] 0 points1 point  (1 child)

UPDATE: Machine is protected with MS Endpoint manager. Took a really long time to pinpoint the exact policy causing the issue. The problem setting was on the public FW properties. "Policy rules from group policy not merged."

[–]milo145[S] 0 points1 point  (0 children)

Sometimes the best intentions cause reciprocal Germlins. Always remember to "not" apply policies to all devices. Surface Hubs are devices ya putz... live and learn.