---
title: Troubleshoot tunnels with diagnostic logs
description: View tunnel diagnostic logs
image: https://developers.cloudflare.com/changelog-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/changelog/llms.txt  
> Use this file to discover all available pages before exploring further. 

[Skip to content](#%5Ftop) 

# Changelog

New updates and improvements at Cloudflare.

[ Subscribe to RSS ](https://developers.cloudflare.com/changelog/rss/index.xml) [ View RSS feeds ](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/) 

![hero image](https://developers.cloudflare.com/_astro/hero.CVYJHPAd_26AMqX.svg) 

[ ← Back to all posts ](https://developers.cloudflare.com/changelog/) 

## Troubleshoot tunnels with diagnostic logs

Dec 19, 2024 

[ Cloudflare Tunnel ](https://developers.cloudflare.com/tunnel/)[ Cloudflare Tunnel for SASE ](https://developers.cloudflare.com/cloudflare-one/networks/connectors/cloudflare-tunnel/) 

The latest `cloudflared` build [2024.12.2 ↗](https://github.com/cloudflare/cloudflared/releases/tag/2024.12.2) introduces the ability to collect all the diagnostic logs needed to troubleshoot a `cloudflared` instance.

A diagnostic report collects data from a single instance of `cloudflared` running on the local machine and outputs it to a `cloudflared-diag` file.

For more information, refer to [Diagnostic logs](https://developers.cloudflare.com/cloudflare-one/networks/connectors/cloudflare-tunnel/troubleshoot-tunnels/diag-logs/).

```json
{"@context":"https://schema.org","@type":"BlogPosting","@id":"https://developers.cloudflare.com/changelog/post/2024-12-19-diagnostic-logs/#page","headline":"Troubleshoot tunnels with diagnostic logs · Changelog","description":"View tunnel diagnostic logs","url":"https://developers.cloudflare.com/changelog/post/2024-12-19-diagnostic-logs/","inLanguage":"en","image":"https://developers.cloudflare.com/changelog-preview.png","dateModified":"2024-12-19","datePublished":"2024-12-19","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
```