![How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics](https://scratchrobotic.files.wordpress.com/2019/01/update_error.png?w=640)
How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics
![The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub](https://ubuntucommunity.s3.dualstack.us-east-2.amazonaws.com/original/2X/4/43499dbb4e6d1c60f62a043283a16d6fd987fb0b.png)
The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub
![How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics](https://scratchrobotic.files.wordpress.com/2019/01/update_error.png)
How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics
![Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found](https://assets.linuxhelp.com/scr/432d99b3e1fba4c59b76da3273f6e9f6.png)
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found
![The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub](https://ubuntucommunity.s3.dualstack.us-east-2.amazonaws.com/original/2X/1/1191edeeb0560f01bf616aeb54284e311e40832c.png)
The status of security.ubuntu.com and its IPs - were they hacked or out of sync? - Ubuntu Community Hub
![在WSL2 中的Ubuntu 系统中,执行命令:sudo apt install php7.4-cli,报错:E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-common_7.4.3-4ubuntu2.5_amd64.deb 404 Not Found 在WSL2 中的Ubuntu 系统中,执行命令:sudo apt install php7.4-cli,报错:E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-common_7.4.3-4ubuntu2.5_amd64.deb 404 Not Found](https://www.shuijingwanwq.com/wp-content/uploads/2021/12/1-7-1280x720.png)
在WSL2 中的Ubuntu 系统中,执行命令:sudo apt install php7.4-cli,报错:E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/p/php7.4/php7.4-common_7.4.3-4ubuntu2.5_amd64.deb 404 Not Found
![Fixed! Error: 404 Not Found | Error: 404 not found[IP: 91.189.92.201 80] |apt-get update error - YouTube Fixed! Error: 404 Not Found | Error: 404 not found[IP: 91.189.92.201 80] |apt-get update error - YouTube](https://i.ytimg.com/vi/gXilHS4oyY8/maxresdefault.jpg)
Fixed! Error: 404 Not Found | Error: 404 not found[IP: 91.189.92.201 80] |apt-get update error - YouTube
![How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics](https://scratchrobotic.files.wordpress.com/2019/01/add_source.png?w=1140)
How to fix “arm64 Packages 404 Not Found [IP: 91.189.91.23 80]” on host PC after JetPack installation – Scratch Robotics
![Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found](https://assets.linuxhelp.com/scr/04ddf7ca60a8691cc5e015506c21e317.png)
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/m/mysql-8.0/mysql-client-core-8.0_8.0.21-0ubuntu0.20.04.4_amd64.deb 404 Not Found
![Err:12 http://security.ubuntu.com/ubuntu focal-updates/main amd64 openjdk-11-jre-headless amd64 11.0.11+9-0ubuntu2~20.04 404 Not Found [IP: 91.189.88.152 80] - 小鲨鱼2018 - 博客园 Err:12 http://security.ubuntu.com/ubuntu focal-updates/main amd64 openjdk-11-jre-headless amd64 11.0.11+9-0ubuntu2~20.04 404 Not Found [IP: 91.189.88.152 80] - 小鲨鱼2018 - 博客园](https://img2020.cnblogs.com/blog/1447599/202201/1447599-20220101084228223-664025450.png)