I am getting Invalid sender error while creating contact in private network. Though i have kept chainId and networkId are same.

  • Do you have the exact error message? Also make sure the sender account has enough balance to deploy the contract.
    – Ismael
    Jan 24, 2018 at 14:18
  • I have checked account balance and it is 0. will it be the primary reason for this error? Jan 25, 2018 at 8:48
  • If that is the reason behind this error then how can i able to update account with some balance? Jan 25, 2018 at 8:56
  • After starting miner now i have 19746 ether in my account , but still getting same error. Jan 25, 2018 at 11:37
  • Make sure you are connecting to your private network, and unlock your account.
    – Ismael
    Jan 25, 2018 at 14:31

2 Answers 2


Check the private Network ,Private Network Create Command run geth makedir and cmd open and this command run :

$ geth --networkid 13 --port 30303 --datadir "E:\bolckchain\chaindata" console

enter image description here Then check Network :

> admin

enter image description here

same Network then sender contact

Try it

Thank You!


I just tested with latest chrome extension and it works like a charm. Update your Chrome extension. Version: 4.1.2 Updated: 28 February 2018

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