During a scheduled scan or a manual scan, you see an entry in the Windows Event Viewer - Application log that is similar to the following:
"Could not scan 1 files inside C:\Winzip81.exe due to extraction errors encountered by the Decomposer Engines."
"Could not scan [#] files inside [path][filename] due to extraction errors encountered by the Decomposer Engines"
This message indicates that a file cannot be scanned. In most cases this is a limitation of the Decomposer Engine's ability to scan compressed or locked files and does not indicate a malfunction in the product.
This event is typically encountered when any of the following occur: