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

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## 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/).