Avast installation aborted due to incompatible software on Mac Sierra

[REDACTED]

I had Sophos installed.  It was scanning less than 5 items per 30 minutes with time machine.  I uninstalled Sophos with the uninstaller and then downloaded Avast.  It fails to install due to incompatible software.  No forum has a solution for this.  I am currently UNPROTECTED and need to get Avast (recommended by my technical support company) working.  Solutions? Anyone had similar problem?

[Eddy]

Have you checked all folders to see if there is anything from Sophos left ?
Is there still something from Sophos running (could be a service) ?

Have you tried this ? > http://www.macexpertguide.com/how-to-uninstall-sophos-mac-antivirus/

[.: Mac :.]

Does sound like something remains of Sophos.  To check for a service still running Open Activity Monitor, make sure its set to view all processes (under View Menu). Look for anything related to Sophos still running.

[tumic]

Hi,
Avast checks for the kernel extensions (KEXTs) of the other AVs. So if you get a message, that there
is incompatible SW, there is almost for sure some Sophos kernel extension loaded.