What's the problem?
Due to a recent change to the Windows 10 Operating System, Macrium Reflect v5 and earlier installs will be unable to create disk images of the Windows System volume (Drive C:). Image creation will fail and display the following error:
To read more about this error please see: Windows 10 Insider Preview Build 18234 Bug
What's the solution?
Users of Macrium Reflect v5 need upgrade to Macrium Reflect v7 or later to continue to use Macrium Reflect on Windows 10.