I get the message: "The server could not verify that you are authorized to access the URL requested. You either supplied the wrong credentials (e.g. a bad password), or your browser doesn't understand how to supply the credentials required."

I installed pgadmin 4 with the commands: sudo apt install pgadmin4 pgadmin4-apache2 And configured everything, but it does not give me access.

I found that I can access the log file: ~/.pgAdmin4.startup.log and copy the URL with the key, but having to do this each time after the 401 Error is not feasible.

What did I do wrong during the installation?


Escaping %URL% in the Browser Command setting with quotation marks seems to fix the problem for me. To do that, right-click the pgAdmin icon in Status & Notifications area, select Configure, and in the Browser Command field enter

/usr/bin/firefox "%URL%"

Note the "s.

My original answer was:

I'm having the same issue on an older version of Kubuntu (16.04), and while I have no real solution, here's an easier workaround:

Once you launch pgAdmin and it opens a browser that shows you that HTTP 401 error message, you'll find a pgAdmin icon in Status & Notifications area of the system tray. Right-click it and select Copy server URL. You can then open this URL in your browser, and it should log you in properly.

  • Well, that is exactly what I am doing right now, but I would like to find a way to not have to do it every single time. – Jorge Paladines Dec 3 '19 at 19:42
  • 2
    @JorgePaladines , I have found a better solution and edited my answer accordingly, hopefully it will help you as well. – Jade Dec 5 '19 at 7:10
  • Yes it did! Thank you very much – Jorge Paladines Dec 9 '19 at 14:52
  • I have tested this from the command line and it works perfectly. Unfortunately, I can't seem to change it in the config (read-only dialog). Do you happen to know where the config file is that stores that? – Jefferey Cave Apr 5 '20 at 14:57

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