PostgreSQL keeps asking for user password with “trust” authentication enabled

All we need is an easy explanation of the problem, so here it is.

I created a user john with createuser and didn’t supply any passwords for it, i.e. no -P option specified. I then proceeded to add the following line above all other lines in the pg_hba.conf file:

host    all             john              trust

I then restarted the server but even after that, when I try to run psql -U john it keeps asking for a password. I even ran the command psql -c "alter role john with password null;" but it changed nothing. PostgreSQL keeps asking for a password for john. What am I missing?

Running PostgreSQL 13.2 on Windows 10.

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

By checking the logs, it got apparent that PostgreSQL was matching the ::1/128 IPv6 address, which had scram-sha-256 as its authentication method. adding a line like

host    all             john            ::1/128            trust

fixed the problem.

Also, there is no need for restarting the DBMS after changes to pg_hba.conf.

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from or, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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