Cannot connect to download.proxmox.com - APT update fails

R

rup

New Member
Nov 24, 2025
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I’m encountering an issue when trying to update my Proxmox VE installation. The APT update process fails with connection errors to download.proxmox.com. Here’s the output:
root@rup:~# apt update && apt upgrade
Hit:1 http://security.debian.org/debian-security trixie-security InRelease
Hit:2 http://deb.debian.org/debian trixie InRelease
Hit:3 http://deb.debian.org/debian trixie-updates InRelease
Ign:4 http://download.proxmox.com/debian/ceph-squid trixie InRelease
Ign:5 http://download.proxmox.com/debian/pve trixie InRelease
Ign:5 http://download.proxmox.com/debian/pve trixie InRelease
Ign:4 http://download.proxmox.com/debian/ceph-squid trixie InRelease
Ign:4 http://download.proxmox.com/debian/ceph-squid trixie InRelease
Ign:5 http://download.proxmox.com/debian/pve trixie InRelease
Err:5 http://download.proxmox.com/debian/pve trixie InRelease
Unable to connect to download.proxmox.com:http:
Err:4 http://download.proxmox.com/debian/ceph-squid trixie InRelease
Could not connect to download.proxmox.com:80 (185.219.221.167), connection timed out
Unable to connect to download.proxmox.com:http:
All packages are up to date.
Warning: Failed to fetch http://download.proxmox.com/debian/ceph-squid/dists/trixie/InRelease Unable to connect to download.proxmox.com:http:
Warning: Failed to fetch http://download.proxmox.com/debian/pve/dists/trixie/InRelease Unable to connect to download.proxmox.com:http:
Warning: Some index files failed to download. They have been ignored, or old ones used instead.
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
 
Probably something at your router/ISP/region. Give it a few minutes and retry.
Code: 
curl -sk 185.219.221.167
<html>
<head><title>Index of /</title></head>
<body>
<h1>Index of /</h1><hr><pre><a href="../">../</a>
<a href="debian/">debian/</a>                                            19-Dec-2024 13:12                   -
<a href="images/">images/</a>                                            01-Oct-2025 14:58                   -
<a href="iso/">iso/</a>                                               19-Nov-2025 12:20                   -
<a href="temp/">temp/</a>                                              11-Nov-2025 15:35                   -
</pre><hr></body>
</html>

Also, check your outbound firewall/proxy if any.

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I’m not sure what’s going on, but after spending more time setting up Proxmox, I’ve run into a strange issue: I can’t download any container templates (e.g., Ubuntu), even though my internet connection seems to be working fine. For example, I can successfully ping Google, but attempts to download templates fail.
 
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