Supabase Invalid Credentials Error

Supabase error invalid_credentials (invalid_credentials) explained: what it means, why it happens, and how to fix it — with copy-paste code examples.

Error code invalid_credentials Supabase Last verified 2026-08-19

Quick Answer

Double-check the email and password for typos, case, and trailing spaces. If that does not apply, ensure the user signed up with email/password and not an OAuth provider — the full checklist is below.

Error Code

Error code: invalid_credentials
Official name: invalid_credentials
Service: Supabase

What does this error mean?

Login credentials or grant type not recognized.

Common Causes

How to Fix

  1. Double-check the email and password for typos, case, and trailing spaces
  2. Ensure the user signed up with email/password and not an OAuth provider
  3. Confirm the email is verified - unconfirmed signups behave like invalid credentials in some configs
  4. If the password was forgotten, call resetPasswordForEmail() to trigger a reset flow
  5. Show a generic message client-side and never reveal whether the email exists

Code Examples

Handle invalid_credentials in supabase-js javascript 
const { data, error } = await supabase.auth.signInWithPassword({
  email: email.trim().toLowerCase(),
  password,
})
if (error?.code === 'invalid_credentials') {
  // generic message: do not leak whether the email exists
  alert('Invalid email or password')
}

Normalize the email before sending and branch on error.code so users see one consistent message.

Framework-Specific Fixes

supabase-js

signInWithPassword returns an AuthApiError with code invalid_credentials. Inspect error.code and show a generic message.

const { error } = await supabase.auth.signInWithPassword({ email, password })
if (error?.code === 'invalid_credentials') {
  showError('Invalid email or password')
}
supabase-flutter

AuthApiException exposes the error code via exception.code; map it to a user-facing message.

try {
  await supabase.auth.signInWithPassword(email: email, password: password)
} on AuthApiException catch (e) {
  if (e.code == 'invalid_credentials') {
    showSnackBar('Invalid email or password')
  }
}

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Frequently Asked Questions

Why am I seeing Supabase error invalid_credentials?

Most often this happens when wrong email or password passed to signInWithPassword(), or when user signed up with an OAuth provider (e.g. Google) but tries to sign in with email/password.

How do I fix Supabase error invalid_credentials?

Double-check the email and password for typos, case, and trailing spaces.

Which frameworks have documented fixes for error invalid_credentials?

This page documents fixes for: supabase-js, supabase-flutter.

Official Sources

This page is based on the official Supabase documentation linked below and adds practical troubleshooting guidance on top.