Default Registry File – DEFAULT and DEFAULT.LOG

If you run WinPatrol 10.0 or later, you'll notice the following files listed in your Hidden Files: default.log, sam.log, security.log, system.log, tempkey.log, and userdiff.log. These files are part of your Windows Registry and are often referred to as registry hive files. You may also see files called default.rrr.log, default.tmp.log, default_tu_10053.log and Default_user_class.dat.log. Registry Mechanic from PC Tools software creates copies of the Windows Registry hive files, when you use the "optimize registry" facility. These files are given extension .rrr. Default.rrr.log is an example of such a file. tools like NotePad.

A registry hive is a group of keys, subkeys, and values in the registry that has a set of supporting files containing backups of its data. The supporting files for all hives except HKEY_CURRENT_USER are in the Systemroot\System32\Config folder on Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003; the supporting files for HKEY_CURRENT_USER are in the Systemroot\Profiles\Username folder. The file name extensions of the files in these folders, and, sometimes, a lack of an extension, indicate the type of data they contain. More information can be found at http://support.microsoft.com/default.aspx?scid=kb;EN-US;256986.

These files are both safe and required. They are opened and written to each time Windows boots. If you try to use the [View Using Notepad] button under Hidden files, you'll get a warning that the files are in use. That's normal.

Safe

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