In Wondows 10 (I don’t know for other Windows versions).
- Open a command prompt, and type
echo %APPDATA%
to get the personal app data folder. - Create an empty file called
_curlrc
in the app data folder. - Write
insecure
on that file and save. - Relaunch julia and build all affected packages with
] up
or similar.
Hope this is detailed enough.