Please re-download Multiwfn and retry.
I downloads this software one day ago, today when I opened it and moved the window of Multiwfn.exe, it just quitted.
I tried to use win+R to run this program, but it quitted again without leaving any hint on the screen. I also tried to open it as administrator, but again it quitted.
I tried many times, but I cannot solve this program. Any body meet this problem?