Anaconda创建虚拟环境时报错CondaHTTPError: HTTP 000 CONNECTION FAILED for url

在安装虚拟环境时，报以下错误：

C:\Users\Administrator>conda create -n HFreceiver_py3.7
Collecting package metadata (current_repodata.json): done
Solving environment: done

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/win-64/current_repodata.json>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.

If your current network has https://www.anaconda.com blocked, please file
a support request with your network engineering team.

'https://repo.anaconda.com/pkgs/main/win-64'

解决方法：

• 清楚掉所有配置好的镜像源、系统默认源

conda config --remove-key channels
conda config --remove channels defaults

• 将镜像文件中的https改成http，添加新的镜像源

// 清华镜像源
conda config --add channels htts://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --add channels http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --set show_channel_urls yes

// 中科大镜像源
conda config --add channels http://mirrors.ustc.edu.cn/anaconda/pkgs/main/
conda config --add channels http://mirrors.ustc.edu.cn/anaconda/pkgs/free/
conda config --set show_channel_urls yes

• 更改地址后，再使用conda create -n name 命令来创建新的虚拟环境

有时候conda缓存也可能导致问题，清除缓存并重试：

conda clean --all