“An HTTP error occurred when trying to retrieve this URL. ”报错怎么回事？Conda install error！！

“An HTTP error occurred when trying to retrieve this URL. ”报错怎么回事？Conda install error！！ 【问题描述】 在windows下，用anaconda安装东西的时候报错如下： An HTTP error occurred when trying to retrieve this URL. HTTP errors are

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