Avast does not open

Avast Free Antivirus / Premium Security
1

Avast Internet Security program and also Avast Cleanup Premium does not open.
It does not react on clicks from shortcuts, system tray, start menu. W10

2
  • Which version of AIS…?
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?