Fix 0xC03A0005 error in Windows 10

When performing a Windows Backup to the NAS device (backup to a network share) that is running Samba, fails with an error message The backup failed, The version does not support this version of the file format (0xC03A0005). The problem occurs because of a conflict with the VHD file that is created by Windows Backup and is mounted during the process. There are three types of VHD files:

1. Fixed,
2. Expandable
3. Differencing

If the VHD file is a sparse file that is not supported by the native VHD driver, the mounting will fail, and you will get this error. An example VHD file is one that keeps expanding depending on the backup size. The problem occurs only in the case of  File Level backup (file/folders in a volume) but not on the block level backup as the vhd file is never mounted. However, in the case of File Level Backup, the vhd is mounted, created by Windows Backup, which does not support the mounting of sparse files.

The solution is to use Strict Allocate: option in the smb.conf file

Login to SMB using SSH. Open the configuration file using the VI editor located at /etc/samba/smb.conf. If the option is not there, you can manually add strict allocate = yes which will make sure there are no sparse file that is created.

Congratulations, you have just Fixed the 0xC03A0005 error in Windows 10 all by yourself. If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.

Now that’s how you fix the 0xC03A0005 error in Windows 10 on a computer. On the other hand, if your computer is going through some system-related issues that have to get fixed, there is a one-click solution known as Restoro you could check out to resolve them.

This program is a useful tool that could repair corrupted registries and optimize your PC’s overall performance. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For a complete set of instructions in downloading and using it, refer to the steps below

Perform a full system scan using Restoro. To do so, follow the instructions below.

1. Download and install Restoro from the official site.
2. Once the installation process is completed, run Restoro to perform a full system scan.
   
3. After the scan is completed click the “Start Repair” button.