Please (re)search before posting.
How you can remove the SafeZone Browser has already been explained several times.
1]
Through control panel > software > avast > change
2]
Disable avast self-defense and delete the folder/files.
Remove the registry entries for it.
Enable avast self-defense again.
Hey, Eddy. I just found this reply of yours again, only a year or so since it was posted.
Option 1 didn't work when I tried it all those months ago. Decided, just out of interest, to
see if I could work out your Option 2 which, at the time defeated me.
Eventually discovered that I had to go into Settings, then into Troubleshooting where the
Self Defence element lurks. SZ folder and the last remaining (.bat) file that I could not
eliminate have now gone to the great cyber-cemetery in the sky.
Self Defence re-enabled - Alles Gut!
Ken Lines.