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Minecraft Education | Unable to join multiplayer game

Scheduled Pinned Locked Moved Firewalling
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  • P
    posix @Uglybrian
    last edited by posix Mar 25, 2021, 9:19 PM Mar 25, 2021, 9:18 PM

    @uglybrian no it’s windows 10 dell inspiron laptop it uses private subnet 192.168.40.x they all do. Wi-Fi is provided by unifi AP.

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      posix @bigchimpin
      last edited by Mar 25, 2021, 9:22 PM

      @bigchimpin hey I remember seeing this bug!
      Lol it’s been hell last two days. Was considering shelling $799 to netgate support....

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      • D
        DaddyGo @posix
        last edited by Mar 26, 2021, 10:47 AM

        @posix said in Minecraft Education | Unable to join multiplayer game:

        no mention of UPNP.

        as the colleague @bigchimpin mentions, we have already discussed it here:
        (wait - wait and end up waiting) 😊

        https://forum.netgate.com/topic/153514/nat-issues-when-playing-games-on-two-computers/12?_=1599056109642

        BTW:
        so I asked about UPnP πŸ˜‰

        Cats bury it so they can't see it!
        (You know what I mean if you have a cat)

        P 1 Reply Last reply Mar 27, 2021, 5:12 PM Reply Quote 0
        • P
          posix @DaddyGo
          last edited by Mar 27, 2021, 5:12 PM

          @daddygo

          Ok thanks, so another update I was researching on UPnP and forgot to add the following configuration. (I did this for another gaming PC to get from strict NAT to moderate NAT and I did see better behavior).

          Services -> UPnP & NAT-PMP (check)
          Enable UPnP & NAT-PMP (check)
          UPnP Port Mapping Allow UPnP Port Mapping (check)
          External Interface WAN
          Interface SPECIFIC VLAN interface
          
          

          Then under

          
          UPnP Access Control Lists
          allow 53-65535 192.168.40.99 53-65535
          

          Unfortunately still not able to join games. Looking at the packet capture I took using (Full) Level detail. I saw many retransmits in TCP. They would come in batches in the flow then everything would return to normal. I googled upnp wire shark capture and it seems all are UDP port 1900 and SSDP.

          @bigchimpin @DaddyGo I want to thoroughly exhaust my options and go through the steps before calling it.I dont doubt your analysis. Mainly documentation. Perhaps might help others get a workaround in place as I did.

          D 1 Reply Last reply Mar 28, 2021, 3:22 PM Reply Quote 0
          • D
            DaddyGo @posix
            last edited by Mar 28, 2021, 3:22 PM

            @posix said in Minecraft Education | Unable to join multiplayer game:

            I want to thoroughly exhaust my options

            This will not be resolved today, maybe tomorrow πŸ˜‰

            Cats bury it so they can't see it!
            (You know what I mean if you have a cat)

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            • P
              posix
              last edited by Mar 30, 2021, 8:32 PM

              UPDATE:

              My child confirmed today that they are able to join other players world.

              I can confirm no change in configuration other the last update I provided on
              making changes Services UPnP & NAT-PMP.

              Will monitor some more.

              D 1 Reply Last reply Mar 31, 2021, 10:13 AM Reply Quote 0
              • D
                DaddyGo @posix
                last edited by Mar 31, 2021, 10:13 AM

                @posix said in Minecraft Education | Unable to join multiplayer game:

                making changes Services UPnP & NAT-PMP.

                Which I would like to add, with things like UPnP & NAT-PMP be careful on your firewall.
                Always run on a separate interface
                (I see you have a VLAN for this purpose)

                Cats bury it so they can't see it!
                (You know what I mean if you have a cat)

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                  tyluerdisy Banned
                  last edited by May 12, 2021, 5:40 AM

                  This post is deleted!
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                  • D
                    dmp1ce
                    last edited by dmp1ce Oct 15, 2021, 2:35 PM Oct 15, 2021, 2:34 PM

                    Did anyone try just port forwarding the recommended ports on the https://portforward.com/minecraft/ page? I'm going to give that a try because I don't really want to turn UPnP on.

                    Some additional ports to forward would be 19133 and 25565 which I didn't see mentioned in this thread.

                    D 1 Reply Last reply Oct 15, 2021, 10:49 PM Reply Quote 0
                    • D
                      dmp1ce @dmp1ce
                      last edited by Oct 15, 2021, 10:49 PM

                      Nevermind, I guess 19133 is for IPv6 and 25565 is for Java Edition. So, opening 19132 should do it for my setup, but I cannot join only host. Minecraft Education gets the wrong IP though.

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                      • K
                        kasatka
                        last edited by kasatka Apr 20, 2022, 7:45 AM Apr 20, 2022, 7:45 AM

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                          GeorgiaClark
                          last edited by May 25, 2022, 8:35 AM

                          This post is deleted!
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                            GeorgiaClark
                            last edited by May 26, 2022, 3:32 AM

                            This post is deleted!
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