DavidR
13
I don’t know what shield initiated the popup alerts, but I think you are more likely to find something in the C:\ProgramData\AVAST Software\Avast\report folder, the WebShield.txt is one if the alerts were from the Web Shield. then there is the FileSystemShield.txt or any of the on-demand scans that run.
See image example of folders, this one is from my XP system so yours would be from the path I gave above.