'http" not supported or disabled in libcurl

I am trying to run a curl command and getting this error:

'http" not supported or disabled in libcurl

I looked where I have curl.exe, found it in C:\Program Files\GDAL and deleted it.

The error persisted. This was curl.exe in C:\Anaconda3\Library\bin, so I deleted it too.

The error still persisted. There was one more curl.exe in the $PATH.

So error is independent of the executable. How can I fix it?

Solution 1:

Ensure you are supplying curl with double quotes ("), not single quotes (')

Curl in Windows is know to not like single quotes as per (for example) this thread:

D:\nr\platform_installer_win32>curl -X GET 'http://api.newrelic.com/v2/applications.json' \ -H "X-Api-Key:${APIKEY}" -i
curl: (1) Protocol "'http" not supported or disabled in libcurl

(...)

I believe the first warning you're seeing is due to wrapping the url in single quotes instead of double.

(from NewRelic forums, emphasis mine)

This also popped up in a QA over on StackOverflow.