Caddy upgrade fails with HTTP 400 error

[Mohammed90 (Mohammed Al Sahaf)]

Don’t use it

HTTP 400 on caddy upgrade

1. The problem I’m having: I’m trying to download a custom caddy from the server and I’m getting an error 400 custom caddy executable with: GitHub - hslatman/caddy-crowdsec-bouncer: A Caddy module that blocks malicious traffic based on decisions made by CrowdSec. GitHub - caddy-dns/cloudflare: Caddy module: dns.providers.cloudflare GitHub - mholt/caddy-l4: Layer 4 (TCP/UDP) app for Caddy 2. Error messages and/or full log output: root@caddy:~# caddy upgrade 2025/06/29 10:17:13.829 INFO th…