I hadn't started/used my Bitcoin client for ages. Now, whenever I start the client, it is downloading block 135407 and does not progress past it.
What can I do?
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See http://bitcoin.stackexchange.com/questions/2914/ for some things to try. – Meni Rosenfeld Feb 20 '12 at 09:06
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What version of the client? – Stephen Gornick Feb 20 '12 at 09:46
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thanks. I did try things mentioned in the other answers. I posted an answer to this question. @StephenGornick: I am using the latest 0.5.2 client. – Patrick Feb 20 '12 at 10:18
4 Answers
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I had this happen to me once. It was apparently caused by an incompatible peer node.
- Delete
$HOME/.bitcoin/peers.dat - Restart
bitcoind
Afterwards, new compatible peers will be found, and hopefully, you'll start processing blocks as expected again.
Ryan McGeary
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Okay, based on the comments I have tried a couple of things but in the end only the following worked:
- Close Bitcoin client
- Backup files from %APPDATA%\Bitcoin
- Optional:Download Block chains from: http://sourceforge.net/projects/bitcoin/files/Bitcoin/blockchain/ to prevent lengthy initial download (Warning: the link advises against doing this if you have transactions in your wallet).
- Start Bitcoin client with the
-rescanoption from command line.
After that the client started downloading blockchains again. This worked for me. Not sure if this will work for everyone.
Patrick
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I had a similar problem, but the -rescan option didn’t help.
In my case, there were a lot of lines referring to orphan blocks in my debug.log file (not 100 % sure it’s related but it may):
2014-08-18 20:52:57 ProcessBlock: ORPHAN BLOCK 0, prev=00000000000000001132f6ac32387e51960e3154b2ad4420bdeb64d77999388f
2014-08-18 20:54:00 ProcessBlock: ORPHAN BLOCK 1, prev=00000000000000000e9926124cabed78be0ae8bab22fb20acc643e94749120f8
2014-08-18 20:56:37 ProcessBlock: ORPHAN BLOCK 2, prev=00000000000000001b3f790fc107051c17702d305b08a3ae6325f40ecf44eae9
...
Finally, I tried to restart the client with the -reindex option which fixed my problem (but took 100 % of my CPU usage for several hours while reprocessing the blockchain).
So if the rescan option don’t work, don’t give up, try the reindex option!
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You should update your bitcoin software. Old bitcoin versions are not supported.
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It's true that regularly upgrading is encouraged, but all clients since 0.2.10 have supported to switch that happened on Februari 20th. – Pieter Wuille Feb 20 '12 at 16:05