[KB6121] Windows Backup failing error message


While attempting to run a backup scan on an external drive after installing ESET, the backup fails and you receive the following error message:

  • The backup failed.
  • Windows Error code:0x8078011E

    Figure 1-1


To resolve this issue, follow the steps in the following Knowledgebase article:

In step 5, create exclusions for:

  • \Device\HarddiskVolume1\EFI\Microsoft\Boot\BCD
  • \Device\HarddiskVolume1\EFI\Microsoft\Boot\BCD.LOG
  • \Device\HarddiskVolume1\EFI\Microsoft\Boot\bootmgfw.efi
  • %WINDIR%\system32\winload.efi
Exclusions for Microsoft Windows Server


  • \Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD
  • \Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD.LOG
  • \Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\bootmgfw.efi
  • \\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD
  • \\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD.LOG
  • \\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\bootmgfw.efi
  • %WINDIR%\system32\winload.efi

If you are using Volume Shadow Copy, exclude also:

  • \Device\HarddiskVolumeShadowCopy(%number%)\*

Processes exclusions:

  • %WINDIR%\System32\wbengine.exe
  • %WINDIR%\System32\wbadmin.exe
  • %WINDIR%\System32\vssvc.exe
Volume of exclusion paths can vary

In the above exclusion paths, the volume can vary. The correct volume can be found in the registry at “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\hivelist”.

In this example, the USB drive is drive letter I. The exclusion would be created for I:\EFI\Microsoft\Boot\BCD

Figure 1-2