failed to connect to server minecraft io.netty | WTBBLUE

I used to be able to connect to my bukkit server in Minecraft by my IP address, but after a while, I could not. It gives me this error when I try to join my server:

Failed to connect to the server

Reading: failed to connect to server minecraft io.netty$AnnotatedConnectException: Connection refused: no further information

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I know that my IPv4 address is, and I put this in the “” file.

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When I click on the file, the server turns on, but I am not able to join it with my IP address, (I can just join with IP4 address).

And Here are my port forwarding settings:

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Here is firewall setting:

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TIP: I can just join my server using the IPv4 address (, but me and my friends can't join with my IP address. How do I resolve this problem?


I changed my modem and tried again and it worked completly! However, when I connect to another modem, I am not able to connect to my server

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