How to Stop the Infinite Wazuh Login Loop After a Version Upgrade

The “infinite login loop” in Wazuh occurs when users are repeatedly redirected back to the login screen immediately after authenticating, effectively preventing access to the dashboard even with correct credentials.

This issue is especially common after upgrades that involve changes to authentication flows, dashboard plugins, or backend dependencies like OpenSearch.

Overview of the Issue After Upgrading Wazuh

After upgrading Wazuh components (especially dashboard or indexer layers), session handling between the frontend and backend can become inconsistent.

The result is a mismatch between stored browser authentication data and what the upgraded system expects.

Symptoms

Users typically report one or more of the following behaviors:

Continuous redirect to the login page after successful authentication
Successful login followed immediately by logout
Blank dashboard followed by forced refresh back to login
Authentication appears to succeed, but session is never persisted

When It Typically Appears

This issue most commonly appears in these scenarios:

Post-upgrade from older Wazuh versions (especially major version jumps)
After plugin or security module updates in OpenSearch or Wazuh dashboard
Following configuration changes in reverse proxies (Nginx, Apache)
After TLS or certificate regeneration that invalidates session tokens

Related Guides:

Why the Login Loop Happens After an Upgrade

The login loop is not a single failure. It’s usually a cascade of session validation and authentication mismatches introduced during or after an upgrade.

Session Cookie Incompatibility Between Versions

Upgrades can change how session cookies are signed, encrypted, or validated.

If the browser retains cookies from the previous version, the backend may reject them silently, causing immediate logout behavior.

Browser Caching Stale Authentication Tokens

Browsers often cache:

JWT tokens
Session cookies
Local storage authentication state

If these tokens are tied to an older dashboard version, they become invalid after upgrade.

Security Plugin Changes in OpenSearch

Security plugins in OpenSearch may introduce:

New authentication backends
Changed session validation rules
Updated cookie domains or encryption keys

Even small changes here can break session continuity.

Dashboard Index Migration or Plugin Mismatch

During upgrades, dashboard plugins may not fully align with the new index structure or saved object schema.

This mismatch can prevent proper session initialization, resulting in repeated redirects.

Reverse Proxy or Base URL Misconfiguration

Incorrect settings in Nginx or Apache—especially:

base_url
server.host
proxy_set_header values

can cause authentication redirects to loop between frontend and backend.

TLS/Certificate Changes Invalidating Sessions

If certificates are updated or regenerated during upgrade, previously issued session tokens may no longer validate due to:

Changed trust chains
Hostname mismatches
Cookie security flags (Secure, SameSite)

Quick Fix: Clear Browser Cookies and Cache (Most Common Solution)

This is the fastest and most frequently successful fix for the infinite login loop after a Wazuh upgrade.

Step-by-Step Instructions

Chrome

Open Settings → Privacy and Security
Click “Third-party cookies” or “See all site data and permissions”
Search for your Wazuh domain
Remove:
- Cookies
- Site storage
Restart browser and re-login

Firefox

Settings → Privacy & Security
Cookies and Site Data → “Manage Data”
Search Wazuh domain
Remove stored data
Restart browser

Edge

Settings → Cookies and site permissions
Manage and delete cookies
Find Wazuh domain entries
Clear all associated data

Clear Specifically

To fully resolve authentication loops, ensure you remove:

Site cookies for the Wazuh dashboard domain
Local storage entries (auth tokens, session state)
Session storage data

A simple cache refresh (Ctrl + F5) is usually insufficient—you need a full state reset.

Hard Refresh vs Full Cache Wipe

Hard refresh (Ctrl + F5): reloads assets but keeps auth state
Full wipe (recommended): removes cookies + storage + cached auth tokens

Why This Fix Works

This resolves the issue because the login loop is most often caused by version-incompatible authentication artifacts stored in the browser.

After an upgrade:

Old session cookies fail signature validation
JWT tokens no longer match backend secret keys
Stored auth state conflicts with updated dashboard plugins

Clearing browser storage forces Wazuh to generate a completely new authentication session aligned with the upgraded backend.

Fixing Session Issues in Wazuh Dashboard

Log Out All Active Sessions (If Accessible)

In some cases, session corruption persists server-side rather than in the browser.

If you still have partial access to the Wazuh dashboard or API:

Navigate to user/session management (if available in your deployment)
Invalidate or revoke all active sessions
Force re-authentication for all users

This is especially useful after upgrades where session encryption keys or authentication backends change.

Restart Wazuh Dashboard Service

A restart helps reset in-memory session stores and reload updated authentication configurations.

Typical commands (depending on your installation):

Systemd-based installs:
- systemctl restart wazuh-dashboard
Docker-based deployments:
- Restart the dashboard container
Kubernetes:
- Restart the deployment pods

This ensures the dashboard is not serving stale session caches that conflict with upgraded backend components.

Clear Saved Credentials in Browser Password Managers

Modern browsers often auto-fill credentials even when authentication systems change.

To eliminate interference:

Remove saved credentials for the Wazuh domain from:
- Chrome Password Manager
- Firefox Logins
- Edge Password Vault

This avoids accidental re-submission of outdated login tokens or usernames that no longer match backend expectations.

Ensure Correct Dashboard URL (No Mismatched HTTP/HTTPS)

A very common cause of login loops is URL inconsistency:

http:// vs https:// mismatch
Using IP address instead of domain
Accessing via reverse proxy path vs direct port

Ensure you always access a single canonical URL, for example:

https://wazuh.example.com

If multiple entry points exist, session cookies may not persist due to domain or security flag mismatches (Secure, SameSite, etc.).

Related Guide:

Fixing Wazuh 502 Bad Gateway: Troubleshooting Guide

OpenSearch Authentication and Backend Mismatch Checks

Authentication loops after upgrade are frequently rooted in backend inconsistencies between dashboard and OpenSearch security services.

Validate OpenSearch Cluster Health

Before troubleshooting authentication, confirm cluster stability:

Check cluster status (green, yellow, red)
Verify node availability
Ensure shard allocation is stable

If the cluster is degraded, authentication requests may fail intermittently or not persist sessions correctly.

Check Security Plugin Compatibility

The OpenSearch security plugin is tightly coupled to both the dashboard and indexer versions.

After upgrades:

Confirm plugin version matches OpenSearch version
Ensure Wazuh dashboard plugin is compatible with backend
Look for deprecation warnings in logs

Version mismatch here is a frequent root cause of:

login loops
401 errors
session invalidation after authentication

Verify Index Pattern Integrity After Upgrade

Upgrades can alter internal index structures used for authentication and saved objects.

Check for:

Missing or corrupted .opensearch-security indices
Broken dashboard saved object indices
Migration failures during upgrade process

If indices are inconsistent, dashboard authentication state cannot be properly established.

Inspect Logs for Authentication Errors

Key log indicators include:

401 unauthorized
invalid cookie signature
session expired
security plugin initialization failed

Where to check:

Wazuh dashboard logs
OpenSearch logs
Reverse proxy logs (if applicable)

These messages typically confirm whether the issue is session, token, or backend mismatch related.

Rebuild Security Index If Needed

In severe cases, the security index may need regeneration.

This is typically required when:

Migration fails during upgrade
Security plugin schema changes significantly
Authentication tokens consistently fail validation

Rebuilding restores default security mappings and forces regeneration of authentication structures.

Internal link suggestion:

“How to Clear Stuck Migration Indices in Wazuh Dashboard”

Reverse Proxy & URL Configuration Issues

Reverse proxy misconfiguration is one of the most underestimated causes of login loops in Wazuh deployments.

Common Nginx / Apache Misconfigurations

Frequent issues include:

Incorrect proxy_pass targets
Missing WebSocket support
Improper path rewriting
Inconsistent upstream definitions

Even small misalignments can break authentication redirects.

Incorrect Base Path Causing Redirect Loops

If the dashboard is served under a subpath (e.g. /wazuh), but configuration assumes root /, authentication redirects will fail.

Symptoms include:

Login redirects to root domain unexpectedly
Dashboard loads briefly then redirects back to login
Broken static asset loading

Ensure the base path is consistently defined across:

Dashboard config
Reverse proxy rules
OpenSearch integration settings

Missing Headers

Authentication and session persistence often depend on correct header forwarding.

Ensure your proxy includes:

X-Forwarded-For
- Preserves client IP for session validation
X-Forwarded-Proto
- Ensures HTTPS sessions are correctly recognized

Without these headers, the backend may treat secure sessions as invalid or inconsistent.

Ensuring Consistent Domain Usage Across Services

All components must agree on a single canonical domain:

Wazuh dashboard
OpenSearch endpoint
API gateway or reverse proxy

Avoid mixing:

IP address access
internal hostnames
public DNS names

Inconsistent domain usage often results in cookie scoping issues, which directly triggers infinite login loops.

Additional Resources

Advanced Fix: Reset Dashboard Sessions and Indices

When basic session cleanup and configuration checks fail, the issue often lies deeper in the saved dashboard state or authentication indices used by Wazuh and its backend search layer, OpenSearch.

Delete or Reset Dashboard `.kibana` / Wazuh Index Equivalents

The dashboard stores critical session and UI state in internal indices (often derived from OpenSearch Dashboards/Kibana architecture).

If these become corrupted during an upgrade, login loops can occur.

Typical problematic indices include:

.kibana_* (dashboard saved objects)
.opensearch_dashboards_*
Wazuh-specific security and session indices

Resetting these forces regeneration of dashboard state and eliminates corrupted authentication artifacts.

Reinitialize Dashboard State

After index cleanup:

Restart OpenSearch Dashboards / Wazuh dashboard service
Allow system to rebuild default saved objects
Re-register index patterns and security mappings

This process effectively restores a “clean slate” dashboard environment aligned with the upgraded backend.

Recreate Security Configuration in OpenSearch Dashboards

In some cases, security configuration metadata becomes desynchronized from the upgraded cluster.

You may need to:

Reapply role mappings
Reconfigure authentication backends
Reinitialize security plugin settings
Regenerate system indices tied to authentication

This ensures consistency between the dashboard and OpenSearch security plugin state.

When to Use This Option (Last Resort)

This should only be used when:

All browser-side fixes fail
Reverse proxy and URL validation checks out
OpenSearch cluster is healthy but authentication still fails
Logs consistently show invalid session or cookie signature errors

It is a high-impact remediation step and should be performed with backups of indices and configurations.

Preventing Login Loop After Future Upgrades

Preventing recurrence is largely about controlling upgrade discipline and session invalidation behavior in Wazuh environments.

Always Clear Browser Cache After Major Upgrades

After any major version upgrade:

Clear cookies for dashboard domain
Clear local storage and session storage
Avoid reusing old bookmarks or cached sessions

This eliminates stale authentication artifacts before they interfere with new session logic.

Upgrade Sequence Best Practices

Correct ordering is critical to avoiding authentication mismatches:

Upgrade OpenSearch first
Upgrade Wazuh manager components
Upgrade Wazuh dashboard last

This ensures backend APIs and security plugins remain compatible throughout the upgrade lifecycle.

Use Staging Environment Before Production Upgrades

Before applying upgrades:

Replicate production environment in staging
Test authentication flows
Validate dashboard login persistence
Simulate browser session behavior

This helps catch plugin mismatches and session-breaking changes early.

Backup Indices and Configuration Snapshots

Always take backups of:

OpenSearch indices
Security configuration files
Dashboard saved objects
TLS certificates and proxy configurations

These backups allow fast rollback if authentication systems break after upgrade.

Monitor Authentication Logs Post-Upgrade

Immediately after upgrading:

Monitor OpenSearch security logs
Watch for 401 / session invalidation errors
Check dashboard authentication traces
Validate login persistence across multiple sessions

Early detection significantly reduces downtime caused by login loops.

Troubleshooting Checklist

Use this checklist to quickly isolate the root cause:

Cookies cleared?
Correct URL used (no HTTP/HTTPS mismatch)?
Dashboard and OpenSearch services restarted?
OpenSearch cluster healthy?
Reverse proxy headers validated?
Security plugin versions aligned?

If all are “yes” and the issue persists, the problem is likely in corrupted indices or deeper authentication state mismatch.

FAQ

Question: Why does Wazuh keep logging me out after upgrade?

Usually due to stale session cookies or authentication mismatch between dashboard and OpenSearch.

After upgrades, old tokens may no longer match updated security configurations.

Question: Will reinstalling Wazuh fix the login loop?

Not typically. The issue is almost always related to:

browser session state
reverse proxy configuration
OpenSearch security mismatch

Reinstalling components rarely resolves the root cause unless the deployment itself is corrupted.

Question: Can browser extensions cause this issue?

Yes. Extensions such as:

ad blockers
privacy blockers
anti-tracking tools

can interfere with authentication cookies or block session storage required for login persistence.

Conclusion

The infinite login loop after a Wazuh upgrade is almost always the result of session inconsistency between the browser, dashboard, and OpenSearch security layer, rather than a single system failure.

In most cases, clearing browser state resolves the issue quickly, but deeper cases require validation of:

session integrity
backend security plugin compatibility
reverse proxy configuration
index consistency after migration

A disciplined upgrade process combined with proactive cache and session management significantly reduces the likelihood of recurrence and ensures stable authentication behavior across future upgrades.