Unable to use UDP port 56326 for VS/Unity messaging.

Unity Engine
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1

I’m using Unity 2020.3, every time I started a new project, I got this warning message.
"Unable to use UDP port 56326 for VS/Unity messaging. "

I’m not making any change to Windows 10 default firewall setup, I don’t get this warning in Unity 2019.4.
I’m wondering how this issue may impact the use of Editor, and how can I solve it?

Thanks.

1 Like
2

I’m also hitting this exact same message.

1 Like
3

This seems to be a new one for me too. Might wanna flag it as bug perhaps?

4

2022.3.6.f1c1 same issue. any solutions?

5

Same here.

6

Just got this - but possibly a Microsoft issue? Mine is port 56380 though
message is from VS package - code: (Microsoft.Unity.VisualStudio.Editor.) VisualStudioIntegration

7

for fixing it just go to unity help tab and click on reset packages to default it will fix the problem. Thank You.

2 Likes
8

still happening

9

same…

10

well, the first question is why cant it? have you checked to see if its in use by something else

11

did not work

12

Same issue here, I’ve checked netstat and nothing is using the port

13

I started seeing this error recently and discovered that it was caused by the “Bluetooth Device (Personal Area Network)” device. After disabling it in the Device Manager, the error went away.

14

I did this and it broke my whole project. Maybe don’t do this one and just ignore the error, this is much worse.

15

I did this and some how it fixed, but beware your whole installed package will be uninstall just remember which package you have installed then reinstall it back

16

This is basically a Microsoft issue, you can see where it occurs in their plugin code. They told me to check what was using the port - answer = nothing apparently!
Seems like poor code which randomly chooses a port and does not look for an alternative when fails.
How we can get that from Microsoft is beyond me!!

17

Somehow, the issue was related to additional adapters in my network settings.
I have two Hyper-V adapters for Docker (Default Switch and WSL) in Network Connections.

So, I disabled them, then relaunched my Unity project. Windows immediately displayed a Security Alert pop-up, and I pressed “Allow access.” I re-enabled my Hyper-V connections, and now everything is working fine.

(I’m using Windows 10 and Unity 6, but the problem occurred on all previous 2022 versions as well.)

1 Like
18

In my case it was VMware network adapters, disabled and it all went away.

image
image1143×645 19 KB

2 Likes
19

Worked like a charm, Thanks!

20

Ran into this today. For me it was caused by Docker. Closing docker and re-opening my project fixed it.

1 Like