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I was trying out on creating a private ethereum network by following this link . However the first connection took too long so I uninstalled it and reinstalled it again. However when I try to run geth .exe I get this error message:

WARN [01-16|09:29:36] No etherbase set and no accounts found as default Fatal: Error starting protocol stack: datadir already used by another process

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  • now I can't type anything on geth
    – ethereumnoob
    Commented Jan 16, 2018 at 1:51

1 Answer 1

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This error message

datadir already used by another process

Usually means there's another instance of geth running. If you are on Windows use the task manager to locate the other instance of geth and kill it. And start again.

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    oh I see, I tried to attach geth but where should I attach it to?
    – ethereumnoob
    Commented Jan 16, 2018 at 3:51
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    @ethereumnoob On windows geth attach ipc:\\.\pipe\geth.ipc should work
    – Ismael ♦
    Commented Jan 16, 2018 at 4:07
  • I get this error: Fatal: Unable to attach to remote geth: Timed out waiting for pipe '\\.\pipe\geth.ipc' to come available
    – ethereumnoob
    Commented Jan 16, 2018 at 6:54
  • what is \\.\pipe\geth.ipc?
    – ethereumnoob
    Commented Jan 16, 2018 at 7:24
  • It is a windows pipe, geth uses that to communicate with the local client. The part \\.` refers to the local machine, pipe` is the type of windows object, and geth.ipc is the name object. Either geth is not running or it is running with different priviledges, ie Administrator vs User.
    – Ismael ♦
    Commented Jan 16, 2018 at 15:20

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