About this tag
The error 87 tag on WindowsForum.com covers discussions about the DISM error 87, which indicates that a command-line option is not recognized. Users report this error when running commands like "Dism /Online /Cleanup-Image /ScanHealth" or "/restore-health" on Windows 7, 8.1, and 10. Common themes include troubleshooting DISM and SFC (System File Checker) failures, using Windows ADK tools, and resolving corruption issues. The tag focuses on practical solutions for this specific DISM error, often involving syntax corrections or alternative repair methods.
  1. K

    Windows 8 DISM Error: 87 the Cleanup-Image option is unknown

    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...
    • Karnage219
    • Thread
    • cleanup-image command line dism error 87 error handling health check image servicing installation issues resource protection scanhealth sfc support system repair tech help troubleshooting update windows adk windows issues
    • Replies: 3
    • Forum: Windows Help and Support
  2. davidhk129

    Windows 8 About Dism /online /cleanup-image /restore-health

    I had read a few threads about ........ 1. Error 87 2.That it is not applicable to Win 7. Since I have 3 machines with different versions of OS, I decided to check it out. On each machine, I ran sfc /scannow, then after that, dism. I found a thing or 2 perplexing..... On my Dell laptop...
    • davidhk129
    • Thread
    • acer corruption dell dism error 87 health home premium integrity pro repair screenshots sfc sp1 tablet windows 7 windows 8.1
    • Replies: 14
    • Forum: Windows Help and Support