事件起因 ：
想安裝xrdp發現無法使用apt安裝，然後更新發現更新失敗，進而想到修改為國內源，修改源以後 發現報錯如下：

root@bogon:/etc/apt# apt-get update && apt-get upgrade && apt-get dist-upgrade 
Ign:1 http://mirrors.ustc.edu.cn/kali kali InRelease
Ign:2 http://mirrors.ustc.edu.cn/kali-security kali/updates InRelease
Err:3 http://mirrors.ustc.edu.cn/kali kali Release
  404  Not Found [IP: 218.104.71.170 80]
Err:4 http://mirrors.ustc.edu.cn/kali-security kali/updates Release
  404  Not Found [IP: 218.104.71.170 80]
Reading package lists... Done
E: The repository 'http://mirrors.ustc.edu.cn/kali kali Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://mirrors.ustc.edu.cn/kali-security kali/updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

![](http://i2.51cto.com/102?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)

解決方案

通過百度 發現可以修改為如下：
參考：//docs.kali.org/general-use/kali-linux-sources-list-repositories

編輯apt-get遠端原始檔

vim /etc/apt/sources-list

註釋掉所有的，然後新增下面兩條：

deb http://http.kali.org/kali kali-rolling main contrib non-free 
deb http://old.kali.org/kali sana main non-free contrib

再次更新效果如下： 【已經可以更新】

root@bogon:/etc/apt# apt-get update
Get:1 http://mirrors.neusoft.edu.cn/kali kali-rolling InRelease [30.5 kB]
Get:2 http://old.kali.org/kali sana InRelease [20.3 kB]                          
Get:3 http://mirrors.neusoft.edu.cn/kali kali-rolling/main amd64 Packages [15.6 MB]
Get:4 http://old.kali.org/kali sana/main amd64 Packages [12.8 MB]  
Get:5 http://mirrors.neusoft.edu.cn/kali kali-rolling/contrib amd64 Packages [112 kB]                                                                                                                                                                                        
Get:6 http://mirrors.neusoft.edu.cn/kali kali-rolling/non-free amd64 Packages [165 kB]                                                                                                                                                                                       
Get:7 http://old.kali.org/kali sana/non-free amd64 Packages [163 kB]                                                                                                                                                                                                         
Get:8 http://old.kali.org/kali sana/contrib amd64 Packages [87.7 kB]                                                                                                                                                                                                         
Fetched 29.0 MB in 10min 44s (45.0 kB/s)                                                                                                                                                                                                                                     
Reading package lists... Done

更新命令：

apt-get update && apt-get upgrade && apt-get dist-upgrade