Hello,
excuse-me for awakening a quite old post, I’m not asking for help but adding some contribution in case of someone else has same problem. I also had yesterday the same message when trying to capture a syspreped Windows 10 pro 1709 image (with Virtual Box)
0_1524123955382_Capture6.PNG
I tried several basic steps suggested in this post, but the thing that simply worked for me was tu upgrade fog server… (It was not updated since two or three months)
I can’t reproduce the issue, but it can be a step to try before recreating a new Windows sysprep image 🙂