Avira is detecting the new client installer as a virus. Specifically the deadlinelauncher.exe, it will not copy it to the programs directory. This is most likely a false positive. Well either that or Amazon is building one heck of a botnet. 
Amazon Skynet®
Good to know! We hit a problem earlier last week where the Launcher was being deleted.
Does Avira provide some explanation as to why it’s been flagged? We’ve seen a few overzealous scanners trigger because they didn’t recognize us yet. I’d just like to know what we’re being accused of. 
It says
HEUR/APC (Cloud) [HEUR/APC] detected in deadlinelauncher.exe
Not much else.