Hi William,
It does take a while. I'm not sure which command did you use, but it should be with spaces:
DISM.exe*<space>/Online<space>/Cleanup-image<space>*/Restorehealth
You should see a progress and a confirmation after its done. Refer to the photos below:
Also, make sure that you see the system32 in there. It indicates that you were running the command as administrator.
Let us know how it goes.
I have the same problem above.
After I have use the command: DISM.EXE /Online /Cleanup-image /RestoreHealth I have received the folloing error:
ERROR: 87
The RestoreHealth does not recgnized in this event.
What these means and what I must to tdo?