My Arduino IDE (ver 1.8.12 on Win10) crashes when I launch it. Running the arduino_debug.exe I get this error message.
arduino_debug.exe
C:\\Program Files (x86)\\
I've got the same issue - the nightly build seems to work
https://www.arduino.cc/download.php?f=/arduino-nightly-windows.zip
https://www.arduino.cc/en/Main/Software