Avast reporting false positives

Avast Free Antivirus / Premium Security
1

I re imaged my Compaq Presario CQ56 Laptop. I keep getting alerts (2 at a time ) that a threat has been detected in my dropbox.
Says Setup.exe is Malware. Also says 5e9594fd.tmp is a threat.

2

you are posting in wrong forum section, virus and false positive help is done in Viruses and Worms forum section https://forum.avast.com/index.php?board=4.0

Try clear your dropbox cache…