即使正确安装，Spyder也不会启动

Question

我正试图在Windows上的Miniconda中的Python 3.6虚拟环境中启动Spyder。安装使用conda失败，但是可以使用pip。但是，当我尝试通过Anaconda Prompt启动它时，什么也没发生。

(py36) C:\Users\User>conda update spyder3

PackageNotInstalledError: Package is not installed in prefix.
  prefix: C:\Users\User\Miniconda3\envs\py36
  package name: spyder3

如果我尝试更新Spyder，则会显示一条错误消息，指出未找到该软件包。

(py36) C:\Users\User>conda install spyder
Collecting package metadata: failed

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/main/win-64/repodata.json.bz2>
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.

SSLError(MaxRetryError('HTTPSConnectionPool(host=\'repo.anaconda.com\', port=443): Max retries exceeded with url: /pkgs/main/win-64/repodata.json.bz2 (Caused by SSLError("Can\'t connect to HTTPS URL because the SSL module is not available."))')) 

我不断收到上述错误。我已经尝试过此查询的所有答案，但没有一个适合我。