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Verify network

If MultiBit seems to be stuck doing nothing, then verifying the network is one way to narrow down what is wrong and fix it. Verifying the network checks you are still connected to the Bitcoin network and shows how far behind you are with synchronization.

To synchronize you must be able to connect to "full nodes" which have complete copy of the block chain and are in a position to provide the small parts of it that are of interest to your wallet. If the ratio of full nodes to lightweight wallets is high then synchronization takes place much more quickly. If the number of full nodes decreases significantly then synchronization takes longer due to more competition with other wallets.

If you are in a position to run or sponsor a full node then we would urge you to consider it.

From the Tools select "Verify network"

If the Peer Count is zero, then you aren't connected to the block chain. This could happen for several reasons detailed below

Verify port 8333 is open

The Bitcoin protocol requires port 8333 (Unofficial) to be open on your router or hub for traffic over TCP (and UDP if your settings allow).

Internally MultiBit uses port 8330 (Unofficial) to ensure that no other instances are present. There is no need to open it on your router or hub.

You may find this wikiHow article provides helpful instructions covering how to configure your own network setup.

Synchronization is taking ages - what's wrong ?

The speed of synchronization depends on many factors:

  • The speed of your network connection
  • The number of connected Peers (6+ is good)
  • The speed of the connected Peers - some nodes don't respond quickly to synchronization requests
  • The overall number of nodes - the more the merrier

I see "There was an error in creating a connection to the Bitcoin network" in the corner

You most likely have a corrupted file in your wallet directory. Here's the procedure to resolve the situation:

  1. Start MultiBit as normal
  2. Unlock your wallet and click Finish as normal
  3. Click "Manage Wallet" in the sidebar and click the "Wallet dashboard" button
  4. Make a note of your "application directory" and your "wallet directory" (copy/paste into a text editor is useful here)
  5. Close MultiBit in the usual way
  6. Open a file browser and navigate to the "application directory" and from there into your "wallet directory"
  7. Locate the file called mbhd.spvchain and delete it
  8. Start MultiBit as normal and unlock your wallet
  9. You should now be able to connect to the Bitcoin network and after a much longer synchronization process than usual your balance will be restored