To fix DISM Error 87, you must use correct command syntax and run the terminal as an administrator. This error typically occurs because of a typo, a misplaced space, or an unsupported command in the current Windows environment. Common Fixes for Error 87
Typing /RestoreHealth before /Online (or similar combinations). dism error 87 fixed
Follow these best practices to never see Error 87 again: To fix DISM Error 87, you must use