Code: Microsoft Windows [Version 6.4.9841] (c) 2014 Microsoft Corporation. All rights reserved. C:\Windows\System32>wmic os get caption Caption Microsoft Windows Technical Preview C:\Windows\System32>
Yep, dism fails to repair the component store reporting the /online option doesn't work on Win RE . Not sure about this, but 'MY WCP WMR' fails to start again (asking if you're surely running any Preview) and sfc /scannow only reverted the mess partially. After a restart it is then able to run but won't remove it completely, dism still fails. CONCLUSION: Better do not use this!!!