My avast says your application has failed to start because it's side-by-side..."

Avast Free Antivirus / Premium Security
1

Can anyone help me solve this problem please. When i turned on my laptop it said two programs weren’t working which were windows defender and avast. So i turned on windows defender but then it wouldn’t let me turn on my avast anymore! PLease any suggestions to solve this problem?

2

You should turn Windows Defender off

3
  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?