1647
MySQLERRORCommonAccess ControlHIGH confidence
Access denied for user (no password provided)
Production Risk
High — application connections will fail until credentials are corrected.
What this means
Access was denied because the user account requires a password but none was provided in the connection attempt.
Why it happens
- 1The client connected without specifying -p or providing a password.
- 2The application connection string is missing the password field.
How to reproduce
trigger — this will error
trigger — this will error
mysql -u myuser
expected output
ERROR 1647 (28000): Access denied for user 'myuser'@'localhost' (using password: NO)
Fix 1
Provide the password in the connection
Provide the password in the connection
mysql -u myuser -p
Why this works
Supplying the correct password satisfies the authentication requirement.
Fix 2
Check application connection strings
Check application connection strings
-- Ensure PASSWORD is set in your application DSN or config file
Why this works
Missing passwords in config files are a common cause of this error in applications.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 1647 ER_ACCESS_DENIED_NO_PASSWORD_ERROR
Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev