OAuth 2.0 Troubleshooting

Common issues and solutions for OAuth 2.0 / OpenID Connect authentication during Nodinite installation and operation.

Installation Validation Failures

If you see validation errors during the pre-flight check (Error [10.3] or [10.4]), this is your starting point.

Troubleshooting OAuth 2.0 Validation Failures covers:

• Error [10.3] – OAuth2 client credentials validation failed
• Error [10.4] – Token claims validation failed for InstallationClient
• Root cause analysis for each error
• Quick-reference checklists
• Common mistakes and how to avoid them
• Debugging tips for complex scenarios

Start here if installation is blocked by validation errors.

Issues by Category

Authentication & Token Issues

• Troubleshooting OAuth 2.0 Validation Failures – Installation pre-flight validation failures
• Entra ID Token Claims Validation – Detailed walkthrough of Error [10.4] root causes

Configuration Issues

• Troubleshooting OAuth 2.0 Validation Failures – Missing Configuration fields (Scopes, Claims, Client IDs)

Azure AD / Entra ID Specific

• Entra ID Token Claims Validation – Token claims not included in access tokens
• Register Nodinite Applications in Azure AD – Initial app registration setup

Recommended Reading Path

1. First time with OAuth? → Start with Register Nodinite Applications in Azure AD to understand the app registration architecture
2. Installation fails with Error [10.3] or [10.4]? → Go to Troubleshooting OAuth 2.0 Validation Failures
3. Token claims still missing? → See Entra ID Token Claims Validation for detailed diagnosis

Related Topics

• Install Nodinite v7 – OpenID Connect
• [Register Nodinite Applications in Azure AD (Entra ID)][]
• OAuth Security and Compliance Reference