On a Windows 7 system (original install on a new laptop), Avast 6 reports "Error Message, 42110, some files could not be scanned, and identifies the following files as “a decompression bomb”: C:\OEM\Preload\Autorun\APP\Acer Backup Manager\Data1.cab (plus mui.exe and mui.exe1 files). Unfortunately, the first-time backup has never been accomplished with this system, and the backup utility does not function properly (will backup up to 25% of the designated files, then stops). Is there a way to evaluate the potential for false positives with a decompression bomb (or otherwise repair the Backup Manager without consequence)?
A CAB file is an installation file that is compressed. It does not pose any actual threat because it has to be decompressed first to become so. The detection does not pose any threat because avast only flags the size of the scan for the avast scanning file exclusion. You must keep “Scan archive files” enabled for the Scan Engine. That allows scanning inside archived files such as .zip , .rar , .cab , etc,
polonus