Topic: Bitcoin Core stopped connecting??? (Read 3404 times)

The topic is older, but at my computer very similar if not the same error appeared at one of the coins.

It helped me to enter winsock reset command ftom the windows command prompt:

        netsh winsock reset

Detailed info: https://www.geeksinphoenix.com/blog/post/2015/06/16/how-to-reset-your-network-adapter-in-windows-10.aspx

don't delete the old want, try a test with a new wallet, to see if that is the problem

Thank you, this worked. I got a node from here https://getaddr.bitnodes.io with a nonstandard port.

So I guess my ISP has blocked port 8333

Time for a angry phone call

I just edited post to include one that's running on non standard port... that'd probably be the first thing to try

if you're on windows, you can either use netsh from the command prompt or use the control panel -> device manager -> network -> properties, then it should have offloading options there, amongst other things.  for linux you can use ethtool, https://www.kernel.org/pub/software/network/ethtool/ethtool-3.15.tar.gz .. compile & install then ethtool -k eth0 (or w/e) will show options, ethtool -K eth0 to change..

i wouldnt mess with those until checking everything else though.

the whole other side closing connection is typically what would happen when a server that is already at its max number of connections is being connected to, afaik (it closes immediately after opening)

try going into console and doing addnode 5.9.24.81 onetry also, if the other one doesnt work (or in linux bitcoin-cli addnode xxx onetry)

I don't think it is the router because other wallets are working fine. Also not a driver issue because the problem is on two seperate computers.

There is no bitcoin.conf file

Antivirus/firewall and all security software is off.

What is task offloading?

Also, if I call my ISP, what am I suppose to explain? What port does bitcoin use? Maybe they have closed it or something...

possibly reasons:

antivirus software
task offloading
faulty router
wrong/old network driver (esp. for a virtual machine)
bitcoin.conf configured to only connect to one host, that's not taking connections anymore

ed: also you could try going into console and do addnode 205.186.129.90:46331 onetry

(connecting to a node that's not using standard port)

Who is your ISP?

Can you try running bitcoind over a VPN (if you know how to do this)?

Nothing to do with China. My Bitcoin core has no problem.

Are you in China?

Shit is getting really weird. I managed to install bitcoin wallet on another computer and it won't connect either!

Just to make sure I haven't done anything wrong:
1. I download bitcoin.zip here https://bitcoin.org/en/download
2. I extract the bitcoin-qt.exe
3. I run it

When you restart without a wallet.dat file bitcoin core creates a new one. So you want to make sure you don't get confused and delete the wrong one. The fact that you are still having problems with a new wallet may be a good sign. Your original wallet is probably fine. I'm afraid I don't know what the error message means, but as long as your wallet.dat file is good, everything will work out. Only damage to that wallet file is irrecoverable.

The wallet can't connect to any nodes even without my wallet.dat file. So the problem must be elsewhere.

My windows installation is fresh and I don't have any crap on it and the firewall/antivirus is off and other wallets work fine so what the hell?

the error "An existing connection was forcibly closed by the remote host" seems to say the problem is on the other end.

It's just your computer! Hope you have a backup to change your wallet.dat file!
Let us know if you can resolve this

Maybe. You should always have a backup of any funded wallet.dat file. You could still try using another wallet, but DO NOT LOSE all the copies with bitcoins or they will be gone. If you want to try here is how:

1. Remove your wallet .dat file. If using windows you can find it typing "%appdata%" in the run box. If using linux it is in a hidden folder in the home folder. the hidden one is ".bitcoin"

2. restart bitcoin and it will scan the blocks and may fix things. If it does, try putting the funded wallet back and restarting.

I checked the log and I'm getting these kinds of errors:

2014-08-27 17:19:40 ext-ip thread exit
2014-08-27 17:19:40 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:43 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:45 112 addresses found from DNS seeds
2014-08-27 17:19:45 dnsseed thread exit
2014-08-27 17:19:46 No valid UPnP IGDs found
2014-08-27 17:19:46 upnp thread exit
2014-08-27 17:19:46 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:49 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:49 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:51 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:54 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:55 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:19:57 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:00 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:00 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:02 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:05 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:06 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:08 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:11 socket recv error An existing connection was forcibly closed by the remote host.  (10054)
2014-08-27 17:20:11 socket recv error An existing connection was forcibly closed by the remote host.  (10054)

Wouldn't I lose my coins then?

try with another wallet data, sometime this has happened to me, i don't know why but some wallet.dat get corrupted with no reason

Don't worry it's not your computer, bitcoin is broken.

 























 Only joking

No, I'll try to get access to another computer soon

Have you tried to run the wallet from another computer or virtual machine or live cd?

The client doesn't connect to any nodes. I'm using version v0.9.2.1 but the older version stopped working also. The last connection was from 11 weeks.

Firewalls are disabled. I even deleted everything related to bitcoin except wallet.dat and now the client is stuck behind five years.

This is some seriously fucked up shit. Any possible explanations how this can suddenly happen and how to fix it?