Server Hosting Error

[Jokey1717]

hello my fellow ftb modpack users, i have a problem with the hosting of a certain private server:

I have a small idea of what could have caused it :
When i created i was using an internet connection using a direct cable from my modem but after i moved my desktop to another location in the house and started using a USB device which allows the computer to get wireless connection since this movement this has been happening every time i attempt to open the server.

If anyone knows how to fix this problem, i would be very thankful if you could tell me
(btw i dont have much knowledge in computer)
Thank you for your time checking this thread.

 

[xSINZx]

I would say the trouble lies in your Router setup.
You have probably assigned the open port 25565 to an LAN IP address. As you have gone from wired to wireless your dhcp will have assigned a different IP to your PC.

I have on occassion gotten this Error also, when I am already running a minecraft server (locally) and forget its running and try starting another.

 

[Jokey1717]

so what do you suggest i do ? Sorry if even after your explanation i do not know
and thank you for responding

 

[xSINZx]

Step One find out what your Systems IP is now.

Use CMD as Administrator type ipconfig/all to find out your default gateway and current LAN IPv4 address.
Find some documentation on your router Make Model etc. Then Search for your router Online with Port Forwarding in the search field. I would say your port forward has been set up to allow 25565 on say 192.168.0.2 and now that you have changed to wireless it could be say 192.168.0.3 as an example.
Personally I would never make a server PC a wireless. I always use wired for my PC but if you have a decent wireless router. It may work ok.

 

[Jokey1717]

Good news , soon I will be having a internet cable being moved to my desktop's current location, from there I think I know how to get the server running again, I thank you for your concern my friend