我找到了解决方案.我尝试从 <vagrant_dir>/embedded/bin 运行 curl，发现我的 PC 上缺少 vcruntime140.dll.所以我安装了新的Visual C++ Redistributable for Visual Studio 2015"，问题就消失了.

I have found the solution. I tried to run curl from <vagrant_dir>/embedded/bin and found out, that vcruntime140.dll is missed on my PC. So I installed fresh "Visual C++ Redistributable for Visual Studio 2015" and the issue disappeared.