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I've successfully been using Bitcoin core for the past months, but since two weeks ago its synchronisation is always stopped at the exact same blockchain. 2 weeks later, sync is behind by 2 weeks. And the error message is still the same: "No block source available" and I have 0 active connections to Bitcoin network.
I have updated the client, and changed networks (I even tried from another country to tell you the truth). I tried to type in "rescan" and "reindex". EDIT : they worked, but sync is now stopped at another block...
Here is the end of the debug window after I did a rescan :
2016-12-25 21:36:12 Still rescanning. At block 440686. Progress=0.988020
2016-12-25 21:36:53 rescan 821342ms
2016-12-25 21:36:54 mapBlockIndex.size() = 441449
2016-12-25 21:36:54 nBestHeight = 441448
2016-12-25 21:36:54 setKeyPool.size() = 100
2016-12-25 21:36:54 mapWallet.size() = 6
2016-12-25 21:36:54 mapAddressBook.size() = 10
2016-12-25 21:36:54 init message: Chargement des adresses...
2016-12-25 21:36:54 torcontrol thread start
2016-12-25 21:36:54 Loaded 60362 addresses from peers.dat 457ms
2016-12-25 21:36:54 init message: Chargement de la liste d'interdiction...
2016-12-25 21:36:54 init message: Starting network threads...
2016-12-25 21:36:54 AddLocal([2a01:cb00:b1d:1d00:7f:42c7:afca:6f9a]:8333,1)
2016-12-25 21:36:54 Discover: ASUS-PC - 2a01:cb00:b1d:1d00:7f:42c7:afca:6f9a
2016-12-25 21:36:54 AddLocal([2a01:cb00:b1d:1d00:d8e0:fea5:2db:481f]:8333,1)
2016-12-25 21:36:54 Discover: ASUS-PC - 2a01:cb00:b1d:1d00:d8e0:fea5:2db:481f
2016-12-25 21:36:54 dnsseed thread start
2016-12-25 21:36:54 net thread start
2016-12-25 21:36:54 addcon thread start
2016-12-25 21:36:54 opencon thread start
2016-12-25 21:36:54 msghand thread start
2016-12-25 21:36:54 init message: Chargement terminé
2016-12-25 21:36:54 GUI: Platform customization: "windows"
2016-12-25 21:36:54 GUI: PaymentServer::LoadRootCAs: Loaded 44 root certificates
2016-12-25 21:37:05 Loading addresses from DNS seeds (could take a while)
2016-12-25 21:37:05 0 addresses found from DNS seeds
2016-12-25 21:37:05 dnsseed thread exit
Any leads ?
-rescanand-reindexare startup parameters. You add them to the startup command of Bitcoin Core, I don't think you can use them from the console. – Murch – 2016-12-20T16:12:35.337Possible duplicate of What can I do when the blockchain synchronization is stuck at a specific block?
– Murch – 2016-12-20T16:16:39.627Possible duplicate of How to resolve “no block source available”?
– Murch – 2016-12-20T16:18:10.553OK I'm sorry I'm going to need to ask you how to do "add them to the startup command" exactly... Thanks. – positive.citizen – 2016-12-21T04:31:43.963
See this description, you'll have to replace
– Murch – 2016-12-21T08:31:02.333-zapwallettxeswith-reindex.Hello, Thanks for the help, but the -reindex command did not work. After a few days of running (reindex is slow...) the sync is now stopped 3 blocs after the one that it stopped before... Any hints ? – positive.citizen – 2016-12-25T21:16:07.177
Does the
debug.logsay anything else besides the previous error message? – Murch – 2016-12-26T00:37:51.633I added the end of the debug.log in my opening message. Thanks so much for your help. I have 300$ that will be lost if I don't manage to make thi work again... – positive.citizen – 2016-12-26T12:01:42.387
Murch any insight ? Please I'm starting to lose any hope... – positive.citizen – 2016-12-29T13:19:14.160
Is this a recent or old version of Bitcoin Core? What hardware are you running this on? Is it possible that your CPU is overheating? It is possible that either your disk or your computer is making mistakes in the calculation, and then a valid block comes out as invalid and the remainder of the blockchain thus cannot be synchronized. If you just want to get your money out see Cannot access my bitcoins because my wallet is still synchronising. What can I do to spend them immediately?
– Murch – 2017-01-07T16:01:59.560Have you tried manually connecting to a specific node (e.g. found on bitcoin nodes)? – Murch – 2017-01-07T16:11:01.240
I've just tried asking around for more suggestions: Are you using a VPN or Tor? – Murch – 2017-01-07T16:23:16.820
Thank you for your help ! I am using Bitcoin Core v0.13.1. I am running this on my laptop (windows 7 flash disk), and my CPU is not overheating. I don't think hardware could be the issue here. I will use your link to access my bitcoins, I will give up on repairing Bitcoin... Best regards ! – positive.citizen – 2017-01-09T18:39:59.420