libcurl/8.4.0 OpenSSL/3.1.4 If you see Schannel , you’re using Windows native SSL. If OpenSSL , Git expects OpenSSL certificates. git config --global --unset http.sslBackend git config --global --unset http.sslVerify Then test:
curl 8.4.0 (Windows) libcurl/8.4.0 Schannel or
curl: (43) A libcurl function was given a bad argument It usually appears when trying to clone a repository, fetch from a remote, or run any git command that uses HTTP/HTTPS transport — including git clone , git fetch , git pull , or even curl commands manually.
git clone git@github.com:user/repo.git (Assuming you’ve set up SSH keys — that bypasses libcurl entirely.) The curl: (43) error on Git for Windows is almost always a libcurl/SSL backend mismatch or a bad global config value . Resetting http.sslBackend or reinstalling with Schannel solves it 99% of the time.