---
title: Troubleshooting Authentication Issues
canonical: https://openvpn.net/as-docs/authentication-130918/
product: Access Server Docs
---

# Troubleshooting Authentication Issues

The topics in this section offer detailed guidance on diagnosing and resolving issues related to authentication in Access Server. They cover common problems such as incorrect credentials, external authentication system failures, and issues with LDAP, RADIUS, and PAM configurations. The topics provide step-by-step troubleshooting methods, including checking server logs and verifying configuration settings, to help users effectively identify and fix authentication issues.

## In this section:

- [Debugging Tips](https://openvpn.net/as-docs/debugging---troubleshooting-tips.md)
- [Reset openvpn Account Admin Access](https://openvpn.net/as-docs/reset-admin-access.md)
- [Common Auth Errors](https://openvpn.net/as-docs/auth-errors---fixes.md)
- [LDAP](https://openvpn.net/as-docs/ldap-troubleshooting.md)
- [SAML](https://openvpn.net/as-docs/saml-troubleshooting.md)
- [RADIUS](https://openvpn.net/as-docs/radius-troubleshooting.md)

---

Prev: [Web Interface Access](https://openvpn.net/as-docs/web-interface.md)
Next: [Debugging Tips](https://openvpn.net/as-docs/debugging---troubleshooting-tips.md)
Index: https://openvpn.net/as-docs/llms.txt