Backup does not complete successfully in the boot environment created with ADK for Windows 10, version 1803.
The following message will be displayed when backup is completed.
Processing is not complete. Click the Back buttun and try again.
The result is the same even if you try again.
This is a known issue.
Create a boot environment with ADK for Windows 10, version 1809.
ActiveImage Deploy USB 188.8.131.521