Software⏱️ 1 min read📅 2026-05-31

How to Fix: FATAL: password authentication failed for user "postgres" (postgresql 11 with pgAdmin 4)

Postgresql password authentication failed due to missing configuration.

Quick Answer: Check the postgresql.conf file for the password setting, and update it if necessary.

The issue you're facing is due to the default password not being set during the installation of Postgresql 11. By default, Postgresql uses a hardcoded password for the 'postgres' user. This password can be found in the `postgresql.conf` file or by running the command `psql -U postgres --command='SHOW password;'

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