Error during Optimize-Volume (can't defrag a drive)
Date Added: 5/4/2017

While trying to run Optimize-Volume from powershell, you may get an error.  If you use -Verbose, you'll see that it successfully analyzes the volume and shows the details, but as soon as it hits 0% on teh draf process, it fails.

Event Log errors:
The volume (Z:) was not optimized because an error was encountered: The parameter is incorrect. (0x80070057)
The volume (Z:) was not optimized because an error was encountered: Element not found. (0x80070490)

To fix this, run these two commands from the command prompt (replace Z: with the drive letter you're trying to fix):
fsutil usn deletejournal /D Z:
fsutil usn createjournal m=1000 a=100 Z:

I had this problem on a VHDX file, which seemed to work fine otherwise.  After running the two above commands, I could immediately do the Optimize-Volume command without error.

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