case #1 You should set 3 path:
%ANACONDAPATH%;
%ANACONDAPATH%\Scripts;
%ANACONDAPATH%\Library\bin;
It will solve problem:
C:\WINDOWS\system32>conda update conda
Solving environment: failed
CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/msys2/noarch/repodata.json.bz2>
Elapsed: -
...
case #2 Also you can use Anaconda Promd (for Win10) instead CLI (cmd.exe)