It sounds like you're having connection issues... try moving closer to your wireless access point, and see if the problem persists. Also, try using a direct cable connection. (Plug the ethernet cable into your computer). If that doesn't work, update everything, it's probably a known issue in Java, your Drivers, or your operating system.
I am having this issue with hosting a server. Any of my friends that join over the internet lose connection after a few minutes. Playing over LAN does not have this issue.
I have tried hosting on two different computers. Both had this problem. Windows firewall is turned off on both, and the correct port was forwarded to each.
Happens both with my onboard (Attansic L1) and PCI NIC (Realtek).
I believe this is actually a Java/Driver issue because I would have the same thing happen to me with Maptools, another Java app which uses the internet.
BTW reboot isn't always required. Try disconnecting the physical LAN cable for 5 seconds.
Still very frustrating because often it would happen several times in a row as soon as I connect to a server.
Win XP SP3
Updated Java and NICs drivers, played with settings etc. Nothing seems to work.
I was going crazy with frustration, because I thought my router was having major major issues. I tried tweaking all sorts of settings to stay connected, but every time I'd load up Minecraft SMP, I disconnect after a few minutes. Finally I thought to search around and see if anyone else has this specific problem with Minecraft, and sure enough, I found this thread, and the others just like it. D:
Has there been any sort of solution offered? Any ideas at all? I'll stick to singleplayer if it persists without end, but I'd love to collaborate, and I can't with the constant disconnections. :sad.gif: All the other computers in my house stay connected, the router itself is connected to the internet, but I get disconnected from everything, and can't reconnect till I either restart my computer or restart the router. Frrrrrustrating.
Well my brother had this problem and he reinstalled Java VM and made sure he had no other versions already installed then he made sure he approved the game on the firewall and its worked fine.
Also you could try port forwarding.
This looks very much like Firewall or Not strong enough CPU but usually the server dialog gives a warning for that.
Anyhow please try these and then post after you have tried these.
Just wanna add a quick word. I duel-boot a computer with Windows XP and Ubuntu. Minecraft works perfectly when using Ubuntu, but I have the disconnected-internet problem when using XP. Pretty sure that proves it is some sort of driver / client error.
Hope Notch knows about this problem, it seems like many suffer from it.
I dont think he can reallly do anything about it apart from a guide because its a completely user issue. So The only way to fix is to do everything the guides suggest.
Happens to me as well. I'm able to host a server and play in there by myself but the moment a friend connects my internet just turns off. I don't need to restart my computer I just disable the connection wait a few minutes then re-enable it and the internet comes back on.
This. I have win7 64bit and am using a linkysys wireless-g usb adapter until i get my network card.
Same issue, myself and my friends were on a local network and after about one minute of it working fine, the server boots the others, and i can continue as normal, but as soon as I disconnect my internet is down, restarting fixes this, but we still cannot get a SMP game to work beyond 2 or 3 minutes.
I read the transmit buffer fix, but I am unable to find this option on XP SP3 (perhaps this is for wireless only? I am running a wired Ethernet into my router.
If anyone has a step by step fix for setting the transmit buffer for xp sp3, PLEASE post it, as I am unable to find this information anywhere on the internets.
Sphinx, I don't think the version of windows determines if the transfer buffer option is available, rather the model of network card that you have. Some network cards seem to have that option while others don't. I have a Realtek PCI-Express GBE Family Controller and I don't have this option.
Anyway, I joined this forum to bump this topic as I am having this exact same problem. After mining 2-4 blocks consecutively in SMP, I notice that the last 2 or so blocks keep regenerating even if I mine them repeatedly and I can't pick up any drops. After about 30 seconds I disconnect from the server and I've lost all internet on the PC that was running Minecraft (all others are fine).
If anyone could come up with a solution similar to the transfer buffer increase that will work on a Realtek GBE network card that would be awesome.
Maybe there is a way to force your ethernet card to increase its transfer buffer through the registry? Does anybody know if there are registry keys for this? If so, you could easily make a registry file that could supply a universal fix for everyone with this problem. At least until Notch or someone else at Mojang rewrites the java code to prevent our network cards from crashing.
So switching from the motherboard's ethernet adapter to an external ethernet adapter fixed this problem with me.
Also, warning to anyone attempting to update the driver for any onboard ethernet adapter, that I managed to fudge it up when i tried to update via the device manager in windows, so... yeah. onboard ethernet adapters may be crappy, and an external one is like 8 bucks, so if you are having this issue and have a spare PCI slot it may be worth just picking an ethernet adapter up if you wanna minecraft.
I have tried hosting on two different computers. Both had this problem. Windows firewall is turned off on both, and the correct port was forwarded to each.
I believe this is actually a Java/Driver issue because I would have the same thing happen to me with Maptools, another Java app which uses the internet.
BTW reboot isn't always required. Try disconnecting the physical LAN cable for 5 seconds.
Still very frustrating because often it would happen several times in a row as soon as I connect to a server.
Win XP SP3
Updated Java and NICs drivers, played with settings etc. Nothing seems to work.
I was going crazy with frustration, because I thought my router was having major major issues. I tried tweaking all sorts of settings to stay connected, but every time I'd load up Minecraft SMP, I disconnect after a few minutes. Finally I thought to search around and see if anyone else has this specific problem with Minecraft, and sure enough, I found this thread, and the others just like it. D:
Has there been any sort of solution offered? Any ideas at all? I'll stick to singleplayer if it persists without end, but I'd love to collaborate, and I can't with the constant disconnections. :sad.gif: All the other computers in my house stay connected, the router itself is connected to the internet, but I get disconnected from everything, and can't reconnect till I either restart my computer or restart the router. Frrrrrustrating.
Also you could try port forwarding.
This looks very much like Firewall or Not strong enough CPU but usually the server dialog gives a warning for that.
Anyhow please try these and then post after you have tried these.
http://www.speedtest.net/result/1062344638.png
I dont think he can reallly do anything about it apart from a guide because its a completely user issue. So The only way to fix is to do everything the guides suggest.
http://www.speedtest.net/result/1062344638.png
Go add yourself to it so it gets elevated!!
This. I have win7 64bit and am using a linkysys wireless-g usb adapter until i get my network card.
I read the transmit buffer fix, but I am unable to find this option on XP SP3 (perhaps this is for wireless only? I am running a wired Ethernet into my router.
If anyone has a step by step fix for setting the transmit buffer for xp sp3, PLEASE post it, as I am unable to find this information anywhere on the internets.
Thanks
Anyway, I joined this forum to bump this topic as I am having this exact same problem. After mining 2-4 blocks consecutively in SMP, I notice that the last 2 or so blocks keep regenerating even if I mine them repeatedly and I can't pick up any drops. After about 30 seconds I disconnect from the server and I've lost all internet on the PC that was running Minecraft (all others are fine).
If anyone could come up with a solution similar to the transfer buffer increase that will work on a Realtek GBE network card that would be awesome.
Maybe there is a way to force your ethernet card to increase its transfer buffer through the registry? Does anybody know if there are registry keys for this? If so, you could easily make a registry file that could supply a universal fix for everyone with this problem. At least until Notch or someone else at Mojang rewrites the java code to prevent our network cards from crashing.
10~15 min playing and my internet goes down!
This has been an issue for a long time now. It never happens on my laptop, however MC runs like crap on my laptop.
Also, warning to anyone attempting to update the driver for any onboard ethernet adapter, that I managed to fudge it up when i tried to update via the device manager in windows, so... yeah. onboard ethernet adapters may be crappy, and an external one is like 8 bucks, so if you are having this issue and have a spare PCI slot it may be worth just picking an ethernet adapter up if you wanna minecraft.
I hope anyone can help
plz reply
If you hep 's for you!