Avira AntiVir Premium Help
Configuration :: Scanner :: Scan
When scanning archives, the Scanner uses a recursive scan: Archives in archives are also unpacked and scanned for viruses and unwanted programs. The files are scanned, decompressed and scanned again.
If this option is enabled, the selected archives in the archive list are scanned. This option is enabled as the default setting.
All archive types
If this option is enabled, all archive types in the archive list are selected and scanned.
If this option is enabled, the Scanner detects whether a file is a packed file format (archive), even if the file extension differs from the usual extensions, and scans the archive. However, for this every file must be opened - which reduces the scanning speed. Example: if a *.zip archive has the file extension *.xyz, the Scanner also unpacks this archive and scans it. This option is enabled as the default setting.
Only those archive types are supported, which are marked in the archive list.
Limit recursion depth
Unpacking and scanning recursive archives can require a great deal of computer time and resources. If this option is enabled, you limit the depth of the scan in multi-packed archives to a certain number of packing levels (maximum recursion depth). This saves time and computer resources.
In order to find a virus or an unwanted program in an archive, the Scanner must scan up to the recursion level in which the virus or the unwanted program is located.
Maximum recursion depth
In order to enter the maximum recursion depth, the option Limit recursion depth must be enabled.
You can either enter the requested recursion depth directly or by means of the right arrow key on the entry field. The permitted values are 1 to 99. The standard value is 20 which is recommended.
The button restores the pre-defined values for scanning archives.
In this display area you can set which archives the Scanner should scan. For this, you must select the relevant entries.