No Add-on can be installed

Configuration
1

Hello,

My Matter server is no longer available. And you can no longer install it either. And Matter (Beta) no longer works. I have no idea whether this is somehow connected.
Can anyone help me? I must have broken something.
greeting Marcus

2

Can you try to visit http://<Ip of HA>:4357 and tell us what it says there?

3

Yes.

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4

Matter (Beta) is the integration that connects Ha to the Matter server, so those are connected.

Have you tried restarting the HA system? (Not just HA Core!).
Can you see other addons?
Also on the Addon page click the refresh icon in the upper right corner.

5

I have restarted HA. Unfortunately without success. I can see other add-ons. The Matter server is also running.

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6

So the addon is there and running?
Then what is not working, because that is what your first description said was at fault.

7

Thats my Problem. I think the Matter Beta needs the Server.

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8

Correct it needs the Matter Server, but the error message might indicate that it can just not find it in the store and then it give up looking for it as installed.
I am not sure, but I think the store needs access to GitHub, so maybe you have a network issue with your HA installation.

9

Unfortunately, I don’t know what has happened or what I should do.

10

Are you having more than one network interface on the HA server?
Are IPv6 enabled on the HA server interface?

Try to reload the integration (click the three dots).

11

I have also just researched the IPv6 issue. But until this morning it still worked without it. I’ll activate IPV6 in the Unifiy tomorrow. And then I’ll let you know. That’s it for today. Thanks for your help.

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12

Just wanted to say, I have the exact same issue. Also some people on Reddit had the same issue. I haven’t changed anything on my setup and it ran flawlessly until mid this week. I have created an issue on GitHub too.

13

Thank you. Have you IPV6 on in your System?

14

IPv6 on automatic same as on my fritz.box router. Haven’t changed anything and was working flawlessly for so long.

15

Thank you. So activating IPv6 does not bring the desired success for me either. Let’s see what happens in your other ticket.

16

Now there is a solution. We must wait.