On the Exclusions tab, you can specify folders and files to be excluded from the SpIDer Guard scans.
The Exclude system files from the scan option instructs to exclude system files, that are included in the internal list of the SpIDer Guard component, from the scan. This list is composed for each Windows OS version according to recommendations from the Microsoft company on using the anti-virus software.
If the option is enabled, the following options are available:
•Exclude Prefetcher DB files option instructs to exclude from scanning database files of the Prefetcher system component.
•Exclude Windows search DB files option instructs to exclude from scanning database files of Windows OS search service.
To configure the list of exclusions
1.To add a file, a folder, or a process to the exclusion list, do one of the following:
•To add an existing object, enter its full path (you can use environment variables).
•To exclude all objects with a particular name, specify the name in the entry field. It is not necessary to specify a path to the object.
•To exclude specific objects, specify the mask of their names to in the entry field. 
More about masks
The mask defines a template for an object definition. At that: ▫the asterisk (*) character replaces any, possibly empty, sequence of characters; ▫the question mark (?) replaces any character (one); ▫other mask characters do not replace anything and mean that the name must contain a particular character in this place. Examples: ▫Report*.doc defines all Microsoft Word documents whose names start with the word “Report” (ReportFebruary.doc, Report121209.doc, etc.) ▫*.exe defines all executable files; i.e., that have the EXE extension (setup.exe, iTunes.exe, etc.) ▫photo????09.jpg defines all JPG images which names start with the word “photo”, end with “09” and contain exact number of 4 other characters in the middle (photo121209.jpg, photoJoe09.jpg, or photo----09.jpg, etc.) ▫file*—excludes all files located in all folders without regard for the extension with the names starting with file. ▫file.*—excludes all files with the name file and with all extensions located in all folders. ▫C:\folder\**—excludes all files located in C:\folder and its subfolders on any nesting level. ▫C:\folder\*—excludes files stored in C:\folder. The files stored within subfolders will be scanned. ▫C:\folder\*.txt—excludes all *.txt files stored in C:\folder. The *.txt files stored within subfolders will be scanned. ▫C:\folder\*\*.txt—excludes all *.txt files stored in the first nesting level subfolders of C:\folder. ▫C:\folder\**\*.txt—excludes all *.txt files stored in subfolders of any nesting level within C:\folder. The files stored in C:\folder itself, including *.txt files, will be still scanned. |
•To add an object with a specific signature, in the Hashes of ignored threats section, specify the following parameters:
▫Hash—an object’s hash value (SHA-256 or SHA-1).
▫Name—a user-defined name for an objects.
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The object with the specified hash value will still be scanned. However, for any detected threats the Ignore will automatically apply. |
2.You can specify only one object in one field. To add one more object to the list, click 
.
3.To remove the object from the list of exclusions, click 
next to the list item that corresponds the object.