Error apt update on Proxmox 9.0 & 9.1

Juan Ortiz

Renowned Member
Nov 9, 2016
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On January 21st, my Proxmox 9.1 servers started having problems with the repositories. The image shows how they are configured; I'm not using enterprise repositories.

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The following image shows these errors when trying to update; even the automatic "update package database" task fails.
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When pinging the repositories from the server, I get a successful response, but it doesn't work. Has anyone else experienced something similar?
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I don't believe it's an IP blocking issue, as I have two servers running Proxmox 9.1 in two different locations with different public IP addresses. In both cases, the effect is the same.

At those locations, I have others Proxmox 8.4.9 servers, and they work correctly.
Looks like your IP has been blacklisted by Debian distribution servers for some reason. Give it 24-48 hours, or try to switch to another mirror.


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Finally, the problem is resolved, and a firewall is verified that the inspection permits the traffic of the SSL certificate. In my case there is a Fortinet, the only one that can change the mode of inspection according to the policy of the Internet, the server and all the functions.