Problem Definition:


Running the command:

DISM /Online /Cleanup-Image /RestoreHealth


Fails at 100%, stating "The Source files cannot be found.  The Error shown is: 0x800f081f


Cause:


The /Online method is out of sync with the actual installed version of Windows.


Resolution:


On the affected Virtual Machine, first Mount the Operating System Image that corresponds to your installation from the Public Catalog.


Then, open an Elevated Command Prompt and run DISM again, specifying the source directory as the Operating System Image.  Note, the following example assumes the DVD drive has letter D:\ assigned to it:


DISM /Online /Cleanup-Image /RestoreHealth /Source:wim:D\sources\install.wim:1 /LimitAccess


Additional Information:


It is advisable to run the following command once the above completes successfully:


sfc /scannow


To avoid the above issue, it is recommended to not use the "Reset Virtual Machine" or "Power Off Virtual Machine" functions in vCloud Director.  Always use "Shutdown Guest OS" or initiate the virtual machine shutdown gracefully from the Operating System.