When using miniconda to create a virtual environment, an error is reported:

An unexpected error has occurred. Conda has prepared the above report.

I found many methods on the Internet, all of which said:

Method 1

Execute CONDA clean — packages && conda clean –all && conda update –all

Method 2

Delete this file

C:\Users[user_name].condarc

The above method may be OK, but if it fails after trying several times, the problem may be that you have opened VPN or system agent
so the solution is: turn off VPN or disable proxy!!! Turn off VPN or disable proxy!!! Turn off VPN or disable proxy.