Find out now: Why is a file not backed up?

Are there files in your backup that are not being backed up? If some files are omitted from your backup and you are wondering why one or more files are "ignored" by the backup, I would like to draw your attention to the following reasons:

• The file is in the global list of excluded files.
  The global exclusion list can be found in the global settings, which you open with the "Options" button. There you will find the button "Excluded files and types...".
• The file is in the list of excluded files for the current job.
  Each job in turn can have its own exclusion list. Press the lower part of the "Options" button in the menu bar and then select the "Settings for this job". There you will find the button "Excluded files and types...".
• The file has been excluded from the backup path.
  You can remove files and folders from the backup path by double-clicking on the path and then clicking on the "Include / Exclude" tab.
• The file is located in a folder that has already been backed up.
• The file has already been backed up to another destination
  If you back up a file to several backup media or to several backup folders, make sure that the option "Check archive bit only for the selection of files to be backed up" is deactivated. This is the only way Langmeier Backup can recognize that this file still needs to be backed up to the other destination.
• The file is marked as 'not to be backed up' in the Windows registry.
  The registry key is located under:
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToBackup