Fixed - Dism Error 87

DISM.exe /Online /Cleanup-Image /RestoreHealth (Missing spaces before slashes)

in Windows translates to: "The parameter is incorrect."

If you need a custom source:

Ensure the "Startup type" is set to or Manual , not Disabled. Close the Services window and run your DISM command again. Fix 6: Run DISM in Safe Mode

. This usually means there's a minor formatting error or a lack of administrative permissions. Primary Fixes for Error 87 dism error 87 fixed

❌ DISM.exe /Online /Cleanup-image /Restorehealth (Missing space before /Restorehealth ) ❌ Incorrect: DISM.exe/Online/Cleanup-image/Restorehealth ▲ Correct: DISM.exe /Online /Cleanup-Image /RestoreHealth How to run it correctly: Copy the exact correct string above. Open your Command Prompt. Paste it and press Enter . Fix 2: Run Command Prompt as Administrator

Many users try to fix Windows Update corruption using a mounted ISO (Installation Media). This is where Error 87 hides most frequently. Let's break down the correct syntax. This usually means there's a minor formatting error

DISM.exe /Online /Cleanup-image /Restorehealth (Missing spaces before the slashes)

DISM /Online /Cleanup-Image /CheckHealth Paste it and press Enter

Error: 87 – The option is unknown. For more information, refer to the help by running DISM.exe /?.

, this is a request for a long article on fixing "DISM error 87". The user wants a detailed, informative piece. The keyword is clear: "dism error 87 fixed".