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when i want open PRIVET NETWORK on METAMASK it wont open. i try it in two PC on same local ethernet

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    Salam Taha, would you please edit your question and provide more details about your problem? – Badr Bellaj Jul 24 '17 at 13:42
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    What client are you running your private network on? – DanF Jul 24 '17 at 15:20
  • check it for make better questions ethereum.stackexchange.com/help/how-to-ask , you provided us 0 details about the problem. – Gawey Jul 25 '17 at 12:19
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it might be a problem with testrpc, potentially it can't listen on the localhost:8545 for different reasons (firewall, another process listening on the same port,etc..).
Solution :
restart it and check if the port is already open :
netstat -aon | find /i "listening" | find "8545" // for windows

netstat -na | grep -i LISTEN | grep 8545 // for linux

otherwise run it and specify different port using --port

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I've seen a lot of people recently have trouble connecting to private networks where the chainId is not equal to the networkId. Consult your private network's manual for how to make sure its chainId and networkId are both the same, unique number.

  • how do I do that – TahaBA Jul 24 '17 at 20:21
  • It depends what client you're using, you can refer to the client's documentation for how. – DanF Jul 24 '17 at 23:57

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