I've got the same problem. "The program can't start because api-ms-win-core-libraryloader-l1-2-0.dll is missing from your computer".
I click on OK 3 times and it seems to run.
On exit it crashes with APPCRASH. Fault Module Name: Qt5WebEngineCore.dll Exception Code: c0000005 Exception Offset: 0000000001c3d1c3
Windows 7 Ultimate SP1 64 bit.
p.s. To anyone blaming Windows 7 - Windows 7 support lasts until 14 January 2020, and Windows 8 until 10 January 2023.
Neither of these operating systems contain api-ms-win-core-libraryloader-l1-2-0.dll, so blaming me for not installing Windows 10 would be a poor cop-out.
Indeed, to install Windows 10 means a new motherboard (no Win10 drivers for my current MB), processor and ram and a fresh install of hundreds of applications I use plus about 300 games (of the >1000 I own). So, close to $1000 and hundreds of hours of my time to just run this 1 program... hmmm No thanks.
Oh, and jliu, you are absolutely right about not trusting the Windows upgrade process. As a computer technician who has had to wipe dozens of PCs which failed (by the customer just clicking OK to the free upgrade)... Yeah, just don't do it.