Bitcoin sync always behind

[peanut82]

Hello,

I have had bitcoin core on my laptop for almost a year now, I had no problems being fully up to date with block chain sync until recently it wouldn't update and kept saying "connecting to peers", I realised I needed to update my wallet so I upgraded to 0.14. Since the upgrade it's stuck on 2 weeks behind for several days now.

I never had this problem before and it seems my sync will not catch up, does anyone know how I can troubleshoot and resolve???

Thanks

P

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[achow101]

You will need to reindex the blockchain. Start Bitcoin Core with the -reindex option. Note that this is a command line option for when you start Bitcoin Core, NOT something you enter into Core's debug console. For specific instructions on how to start Core with -reindex, we need to know what OS you are using.

[Velkro]

You will need to reindex the blockchain. Start Bitcoin Core with the -reindex option.

Another solution would be to delete folder with blocks or just all blocks downloaded.
It will download from start without problems.

[Va1sim0t]

I'm a new user, Bitcoin Core v0.13.2 and a Bitcoin\blocks folder with over 101 GB. I was behind the current state for months now (it's 18 weeks today after months of catching up) and seriously wondered why the initial start took so long :-)
I upgraded to 0.14 today. It verified the existing blocks and there's a new popup when starting that the last part of the sync is going to take three days. I'll keep an eye on the progress bar.

[Va1sim0t]

Ok, so it's 0,02% progress per hour, equals now to four weeks continous numbers crunching... that can't be right?

[JellyO]

Ok, so it's 0,02% progress per hour, equals now to four weeks continous numbers crunching... that can't be right?

Have you considered using a light client or do you need the redundancy of a full blockchain on your system? Electrum works quite well for regular use.

[defcon23]

You will need to reindex the blockchain. Start Bitcoin Core with the -reindex option. Note that this is a command line option for when you start Bitcoin Core, NOT something you enter into Core's debug console. For specific instructions on how to start Core with -reindex, we need to know what OS you are using.

this is the correct solution wich was given by achow101 : you indeed have to launch your wallet with the -reindex  option.

[dezoel]

Ok, so it's 0,02% progress per hour, equals now to four weeks continous numbers crunching... that can't be right?

You can restart bitcoin core with  -dbcache=1500  or more depending on your system hardware, it will speedup the process.

[Va1sim0t]

Thank you everyone - reindexing worked and I looked into other clients. I wasn't aware that it's not neccessary to download the whole blockchain.