I’d suspect that this uncanny Program Files (x86) gives you headaches.
I’m on Windows too, but I’ve had similar problems a long time ago, and ever since either install programs that might not like this path in an extra directory, with no blanks or other funny characters or use another (more complicated) workaround creating a symbolic link (this is possible in Windows too) to that folder and replace the “funny” path with my custom path.
Since I had to reinstall the job lot several times (due to HW crash and Win10 desaster), I started to appreciate @mumblepins toolchain installer
Toolchain for Windows Installer