unsuccessful initial attempt using frozen solve. Retrying with flexible solve.

在您的问题中，您描述了一个关于使用conda安装软件包时的错误信息。根据引用[1]中的描述，这个错误提示是由于找不到对应的软件包而导致的。解决这个问题的方法是修改conda配置文件，将包的下载源改为http而不是https，具体的操作是打开C:\用户\username.condarc文件，将其中的https修改为http即可。

另外，在引用中，提到了关于学校失败的应对策略。但是与您的问题似乎没有直接的联系，所以我无法给出相关的答案。如果您还有其他问题需要解答，请随时提问。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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