报错类型大致如下：
InvalidArchiveError(
"Error with archive C:\Users\Ad\.conda\pkgs\paddlepaddle-1.6.1-py37_cpu_windows.tar.bz2. You probably need to delete and re-download or re-create this file. Message from libarchive was:nnFailed to open 'C:\Users\ Ad\.conda\pkgs\paddlepaddle-1.6.1-py37_cpu_windows.tar.bz2'")
InvalidArchiveError(
"Error with archive C:\Users\Ad\.conda\pkgs\certifi-2019.9.11-py37_0.tar.bz2. You probably need to delete and re-download or re-create this file. Message from libarchive was:nnFailed to open 'C:\Users\Ad\.conda\pkgs\certifi-2019.9.11-py37_0.tar.bz2'")
InvalidArchiveError("Error with archive C:\Users\Ad\.conda\pkgs\conda-4.7.12-py37_0.tar.bz2. You probably need to delete and re-download or re-create this file. Message from libarchive was:nnFailed to open 'C:\Users\Ad\.conda\pkgs\conda-4.7.12-py37_0.tar.bz2'")
两种解决方案：
- 管理员身份打开
- 修改权限
右键.conda–>属性–>修改
