While opening query tool via pgadmin, i am getting this error on popup.

could not send data to server: Socket is not connected could not send SSL negotiation packet: Socket is not connected

Does any one know why this is happening.

2 Answers 2


try changing your host connection to "" instead of "localhost" it worked for me

  • 1
    If your local resolution makes localhost not resolve to, you have a big problem on your hand as almost everything running out there is excepting this name resolution. Feb 20, 2020 at 18:45
  • 5
    @PatrickMevzek, localhost also resolves to the IPv6 loopback address ::1, while postgres might be configured to listen on only. Feb 20, 2020 at 20:42
  • Thanks @Aya Hayder, this worked for me too!
    – Mark
    Mar 13, 2020 at 10:53
  • @ Mark 2 you're welcome ^^
    – Aya Hayder
    Mar 15, 2020 at 21:06
  • 2
    Thanks! This bug is ridiculous. I could see everything about my db but not the rows of tables. May 19, 2020 at 14:52

You might consider that another app is using the socket. Or the postgres pg_hba.conf needs to be modified to allow non-local access.


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