sudo apt-get update连接失败及无法安装软件包问题求助
2026-4-21
sudo apt-get update连接失败及无法安装软件包问题求助
我这几周运行sudo apt-get update时一直遇到几个错误，到今天连sudo apt install都没法正常用了。我在网上搜了好多解决办法试了都没用，实在没辙了，希望有人能帮我看看问题出在哪，提前谢谢大家的帮忙！
运行apt-get update返回的错误：
Err:2 http://archive.ubuntu.com/ubuntu jammy InRelease Connection failed [IP: 185.125.190.39 80] Err:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease Connection failed [IP: 91.189.91.82 80] Err:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease Connection failed [IP: 91.189.91.81 80] Err:5 http://archive.ubuntu.com/ubuntu jammy-security InRelease Connection failed [IP: 91.189.91.83 80] Reading package lists... Done W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy/InRelease Connection failed [IP: 185.125.190.39 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-updates/InRelease Connection failed [IP: 91.189.91.82 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-backports/InRelease Connection failed [IP: 91.189.91.81 80] W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy-security/InRelease Connection failed [IP: 91.189.91.83 80] W: Some index files failed to download. They have been ignored, or old ones used instead.
运行sudo apt install的错误示例（以安装openconnect为例）：
Reading package lists... Done Building dependency tree... Done Reading state information... Done E: Unable to locate package openconnect
备注：内容来源于stack exchange，提问作者Siromenthe
