问题

conda install pytorch torchvision torchaudio cudatoolkit=11.6 -c pytorch -c conda-forge

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://conda.anaconda.org/conda-forge/win-64/cudatoolkit-11.6.0-hc0ea762_10.tar.bz2>

解决

尝试https -> http 没用，想到了手动安装
1.根据error提示：浏览器打开 https://conda.anaconda.org/conda-forge/win-64/ ，搜索并下载对应压缩包

conda install 路径\压缩包 // conda install C:\Users\fei\Downloads\cudatoolkit-11.6.0-hc0ea762_10.tar.bz2

特别地：
将压缩包复制到Anaconda\pkgs文件夹下

conda install --use-local 压缩包 // conda install --use-local cudatoolkit-11.6.0-hc0ea762_10.tar.bz2

3. 安装完毕，重新执行命令conda install pytorch torchvision torchaudio cudatoolkit=11.6 -c pytorch -c conda-forge