All commands should be run from an elevated command prompt.
dism /online /cleanup-image /scanhealth
dism /online /cleanup-image /checkhealth
dism /online /cleanup-image /restorehealth
Mount the Windows Server 2016 ISO as a drive (E: in this case)
Run dism /online /cleanup-image /restorehealth /source:WIM:E:\sources\install.wim:1 /limitaccess
Run sfc /scannow