📖 RADIUS & NPS Reason Code Interpreter
⚡ Output
ℹ️ About RADIUS & NPS Reason Code Interpreter
The RADIUS & NPS Reason Code Interpreter helps network and system administrators quickly identify the root cause of authentication failures in Microsoft Network Policy Server (NPS) and other RADIUS implementations.
Instead of manually searching through Microsoft documentation for cryptic numeric codes like '16' or '265', this tool provides the exact meaning and, more importantly, a practical resolution step.
📖 How to use RADIUS & NPS Reason Code Interpreter
- 1. Locate the Reason Code in your NPS or RADIUS event logs (often found in Event Viewer under Custom Views -> Server Roles -> Network Policy and Access Services).
- 2. Enter the numeric code into the input field below.
- 3. Click 'Run Tool' to view the explanation and recommended resolution.
❓ Frequently Asked Questions
What is Reason Code 16?
Reason code 16 simply means 'Authentication failed due to a user credentials mismatch'. This usually means the user typed their password wrong or the account doesn't exist.
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