Hi everyone, My laptop was recently infected with a virus that hijacked my browser and started this wau.exe file that displays this fake Windows Defender scan that keeps popping up when I access the internet. I was able to remove the infection using Malwarebytes but afterwards, every time I start up the computer, I get this message: Windows Defender Application failed to initialize: 0x80070006. The handle is invalid. I can't start it manually and I don't know if this is because the virus turned it off or removed something from defender. I use Windows Vista Home Edition Please advise me on how I might be able to correct this problem. Thank you so much for your help. It is greatly appreciated!!!