DISM Error: 87 the Cleanup-Image option is unknown

[sunav gajurel]

So I'm having trouble finding and installing updates, and that has led me to an issue with DISM while trying to fix it.When i run DISM, "Dism /Online /Cleanup-Image /ScanHealth" it returns an error:87 the Cleanup-Image option is unknown.I can run "Dism /online /Cleanup-Image /?" and it will return the appropriate help info, but when ran without it cannot scan and comes up with the errorWhen i try "sfc /scannow" it returnsWindows Resource Protection did not find any integrity violations.

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