A scan report indicated 21 warnings. Where do I find these? Do they indicate a threat?
Warnings typically mean that some file could not be scanned. That can be for example encrypted files, huge files. At Scan Result Page’s right column should be a brief explanation of the cause (set detail level to “Infections and Warnings”. However, there’s not much to be affraid.
Be aware that some system files could be marked as a possible decompression bomb - they are fine but we cannot distinguish them from the real decompression bombs and thus we don’t decompress them to scan a content.