Microsoft has fixed the "Launcher_Main.exe has stopped working" error (Logitech Webcam) that occurred when using the Logitech Software. The issue was caused when Microsoft originally removed support for compressed MJPG and H.264 streams for webcams with the launch of Windows 10 Anniversary Update.

Cumulative Update KB3194496 for Windows 10 PC Build 14393.222 restores full functionality of the Logitech Webcam & software.