The “Problem” is, that this message doe not come from Avast. It comesfrom Mcafee. :slight_smile: You should update your Mcafee Dats and scanningengine or yust disable the Scanor Bootscan line in the Autoexec.bat

Edit: You can do this by downloading the Sdat*.exe file from this ftp Server ftp://ftpeur.nai.com/pub/antivirus/datfiles/4.x. Just download and start it.