WampServer

I didn't want to open a new thread since this seems to be the exact same problem I'm having, but I'm not sure how to resolve it after many hours of trying everything I could dig up here and on SO. I'm on Windows 10, upgraded my 2.5 installation using wampserver2.5_x64_update_3.0.3.exe, then wampserver3_x86_x64_update3.1.9.exe to get to 3.1.9. Curl works fine with PHP 7.03 (and below); but
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