Answer that worked for me (W10/Ruby2.6.0) was:
- Download cURL from the following URL: https://curl.haxx.se/windows/ (I chose 64bit because that’s the system I’m using)
- Go into the archive and browse to
/bin - Locate
libcurl_x64.dll(it may be justlibcurl.dll) - Extract to your local drive
- Rename it to
libcurl.dllif it has the_x64suffix - Cut + paste the file into the
/bindirectory of your Ruby installation