127.0.0.1 or localhost don't work, but ip address does?


  1. Calab
    Posts : 57
    Windows 11
       New #1

    127.0.0.1 or localhost don't work, but ip address does?


    Running Windows 10 Pro 64 bit and having an odd issue that I can't resolve. My browser is Edge Chromium.

    I have a several programs running on my PC that use a web based interface, each running on their own port. For example, 8081 is used by SickBeard. 8082 is used by SABnzbd.

    If I specify "http://localhost:8081" or "http://127.0.0.1:8081" the web interface does not open. The web browser tells me that it is an invalid address.

    If I specify "http://192.168.0.8:8081" the web interface opens fine, and works with no issues. 192.168.0.8 is the IP address hardcoded into the computer.

    If I open a command prompt and ping localhost, it pings ::1:. This happens even if I disable IPv6 on my network adapter.

    I can ping 127.0.0.1 fine in the command prompt.

    I can TELNET to 192.168.0.1 on port 8081 and 8082, but not 127.0.0.1 on the same ports.

    netstat -a has the following entries for the above mentioned ports:
    TCP 192.168.0.8:8081 Server:0 LISTENING
    TCP 192.168.0.8:8082 Server:0 LISTENING

    Can someone suggest why "localhost" and 127.0.0.1 are not working?
    Last edited by Calab; 27 Sep 2020 at 00:00.
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  3. Calab
    Posts : 57
    Windows 11
    Thread Starter
       New #2

    The only way I could resolve this is with a fresh Windows installation.
      My Computer
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