I'm running testrpc on the default port 8545.

I run truffle console and test with: web3.eth.sign(web3.eth.accounts[0], web3.sha3("123"))

This works fine. According to docs the sign method only works if the account is unlocked, so it seems I should be all set.

But after successfully running init/compile/migrate, I run truffle serve and when I go to the web page on localhost:8080, I get this popup message:

"Couldn't get any accounts! Make sure your Ethereum client is configured correctly."

  • Are you doing both truffle serve and opening the browser on the same machine? – Xavier Leprêtre B9lab Sep 10 '16 at 0:15
  • Yes, same machine :) – Dennis Peterson Sep 10 '16 at 0:26
  • What does your Truffle configuration look like? – Tim Coulter Sep 12 '16 at 22:47
  • v2.0.0 on Ubuntu, node v5.12.0 – Dennis Peterson Sep 12 '16 at 23:18
  • Just a standard install – Dennis Peterson Sep 12 '16 at 23:19

I got this error as well.

I had MetaMask Ethereum client installed but had not logged in yet.

The default truffle app.js picked up the web3 instance injected by MetaMask. Once I logged into MetaMask to create initial accounts, the error went away.

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If Metamask plugin added to your chrome and you are using chrome then your code uses Web3 instance injected in Metamask. Once you login/unlock the Metamask then your code will get account address which created by Metamask.If you need TestRPC's default account address i.e account[0] then try with other browser.

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I got this error too and the solution was a variation of @modpy 's one.

So I had tried to upgrade the MetaMask Chrome plugin and it was in the process of doing that - So MetaMask was enabled and was trying to connect to the local blockchain on port 8545.

Removing MetaMask from Chrome did the trick (and later I re-installed the upgraded version)

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