Try installing curl with the dev libraries:

sudo apt update &&
sudo apt upgrade &&
sudo apt install curl libcurl4-openssl-dev

You might already have curl

It is possible that you won't need to download anything:

• If you are on Windows 10, version 1803 or later, your OS ships with a copy of curl, already set up and ready to use.

• If you have Git for Windows installed (if you downloaded Git from git-scm.com, the answer is yes), you have curl.exe under:

   C:\Program Files\Git\mingw64\bin\
  

  Simply add the above path to PATH.

But curl may be a PowerShell alias to its own Invoke-WebRequest command. If that is the case, you can invoke actual curl as curl.exe, or remove the alias with rm alias:curl.

Installing curl with a package manager

If you are already using a package manager, it may be more convenient to install with one:

• For Chocolatey, run choco install curl
• For MSYS2, run pacman -S curl
• For Scoop, run scoop install curl
• For Cygwin, add the curl package in Cygwin Setup. EDIT by a reader: Cygwin installer design has changed, please choose curl packages as follows:

Installing curl manually

Downloading curl

It is too easy to accidentally download the wrong thing. If, on the curl homepage, you click the large and prominent "Download" section in the site header, and then the large and prominent curl-7.62.0.tar.gz link in its body, you will have downloaded a curl source package, which contains curl's source code but not curl.exe. Watch out for that.

Instead, click the large and prominent download links on this page. Those are the official Windows builds, and they are provided by the curl-for-win project.

If you have more esoteric needs (e.g. you want cygwin builds, third-party builds, libcurl, header files, sources, etc.), use the curl download wizard. After answering five questions, you will be presented with a list of download links.

Extracting and setting up curl

Find curl.exe within your downloaded package; it's probably under bin\.

Pick a location on your hard drive that will serve as a permanent home for curl:

• If you want to give curl its own folder, C:\Program Files\curl\ or C:\curl\ will do.
• If you have many loose executables, and you do not want to add many individual folders to PATH, use a single folder such as C:\Program Files\tools\ or C:\tools\ for the purpose.

Place curl.exe under the folder. And never move the folder or its contents.

Next, you'll want to make curl available anywhere from the command line. To do this, add the folder to PATH, like this:

1. Click the Windows 10 start menu. Start typing "environment".
2. You'll see the search result Edit the system environment variables. Choose it.
3. A System Properties window will popup. Click the Environment Variables button at the bottom.
4. Select the "Path" variable under "System variables" (the lower box). Click the Edit button.
5. Click the Add button and paste in the folder path where curl.exe lives.
6. Click OK as needed. Close open console windows and reopen, so they get the new PATH.

Now enjoy typing curl at any command prompt. Party time!

As pointed out in the comments, it is indeed running curl in the correct location, but the executable is a Chocolatey shim which tries to defer to another one.

For some reason I had manually replaced the curl inside System32 with such an .exe to solve a different issue (which is as stupid as it sounds, I know). I re-replaced it with an actual curl executable and it works perfectly now.

cURL on Windows

Skip to second section for more direct solutions

I have had a lot of issues with cURL on Windows. For example, and I realize your issue is likely much different than this, the following cURL command for RabbitMQ's HTTP API works great on Linux but does not work with the latest version of cURL on Windows 10.

curl -i -v -u root:root -H "content-type:application/json" -XPOST -d'{"vhost":"/","name":"amq.default","properties":{"delivery_mode":1,"headers":{}},"routing_key":"EMAIL","delivery_mode":"1","payload":"dasdfasdf","headers":{},"props":{},"payload_encoding":"string"}' http://localhost:15672/api/exchanges/%2f/amq.default/publish

I realize this might be a roundabout answer but I would do the following:

1. In your start menu search for settings and click it
2. Select Updates and Security
3. Select For Developers
4. Enabled Developer Mode

Once that is enabled restart your computer. Once the computer has started back up search for bash.exe. You now have access to an Ubuntu bash shell. Run cURL from there.

You can read more about this from here

More Direct solutions

If you don't want to do that I can think of two other things.

1. Place the binary (exe) file in your root c:\ drive and then update your path variable to reflect the new location. Sometimes windows environment variables don't like spaces. Similarly you can just put quotes around it "C:\Program Files\curl-7.57.0\AMD64"
2. If the above doesn't work, ,ake sure your path variable is set in system variables and not overridden in user variables by a path variable that doesn't include the location of your cURL binary file
3. If it still doesn't work then put the path of the curl binary as the first entry in your path variable. I've also had windows path variable break when an entry before it was messed up... although I think that might have been fixed with windows 10.

Also, this is my personal preference, but I generally like to create create a new environment variable with the location. For example:

CURL     -     "C:\Program Files\curl-7.57.0\AMD64"

Then I append to the end of PATH a reference to the new CURL variable

%CURL%

I'm not saying this is necessary, just my preference. The double quotes will probably fix your issue though.

You can find the answer here: Running curl via powershell - how to construct arguments?

"In PowerShell curl is a built in alias to Invoke-WebRequest cmdlet. And aliases have priority in command resolution. To solve your problem you have more specifically, use curl.exe instead of curl, so command not resolved to alias"