Make Login Failures Clear—Without Compromising Security

This Keymate extension replaces generic, confusing error messages with dynamic, context-aware feedback. Improve usability, reduce support tickets, and maintain security standards.

Contextual, Secure, and Localized Error Handling for Better UX

User-Friendly, i18n-Aware Login Feedback

Frustrating or vague login errors are a top source of user dissatisfaction and support burden. This extension allows Keycloak to:

From Vague to Valuable

All without modifying fragile FreeMarker templates.

Example: Transform generic errors into helpful, secure, and localized user feedback.

Key Components:

Show detailed, scenario-based error messages (e.g. locked account, expired password, invalid MFA, etc.)

Localize all messages with i18n support

Display dynamic guidance (e.g. recovery suggestions) based on error type

Mask sensitive failure reasons to avoid brute-force hints

Customize text per realm, tenant, or login flow

Extension Highlights

Contextual Error Detection

Dynamically detects and classifies login failure reasons

i18n-Ready Messages

Supports multilingual message sets, locale-based fallback

Security-Aware Masking

Avoids revealing sensitive reasons (e.g. user existence)

Helpful User Guidance

Displays actionable suggestions: reset password, contact support, retry later

Tenant-Based Customization

Different error messages per realm or login context

Compatible with MFA & Custom Authenticators

Works seamlessly with additional login flows

Frequently Asked Questions

No. Sensitive data like username existence is masked in production mode, per security best practices.

Yes. Full i18n support with fallback logic.

Yes. It enhances feedback for password, OTP, biometric, and custom flows.

Yes. Built as a pluggable extension—no template hacking or core patches.

How to Use This Extension

Don't lose users to unclear login failures. Deploy Keymate's Login Feedback Enhancer for smarter, safer, and multilingual error handling.

Implementation Steps

Deploy the SPI extension into your Keycloak installation

Configure error message keys and translations per locale

Define masking policies (e.g. show generic vs. specific)

Activate per realm or authentication flow

Test various failure scenarios and validate security posture

ELEVATE YOUR IAM STRATEGY

Ready to Transform Your Keycloak Experience?

Implement fine-grained authorization, multi-tenant infrastructure, and comprehensive security policies with Keymate — built on the Keycloak foundation you already trust.