I really can’t decide if this is a Stupid Question or not, so here goes: since older version installers aren’t available, is it possible to put Avast (Free) into Passive Mode and use an offline installer to test an updated version installed into a dedicated folder? or would that cause conflicts in references to ProgramData / AppData folders and the registry?
Do you mean, you want to test new Avast version while keeping old ones in Passive Mode? If so I suppose it’s not possible. I wonder it’s even possible to try that, as installer may automatically determine existing installation and update it.
Maybe you should try image backup software instead.
