DISM requires arguments in a specific order. The general structure is:
Running the command prompt without administrator rights.
A broken Windows Update cache can confuse DISM when it attempts to download repair files. Open the Administrator Command Prompt.
DISM Error 87 Fixed: Ultimate Step-by-Step Troubleshooting Guide dism error 87 fixed
Severe operating system corruption blocking the DISM service from executing properly.
If you are on Windows 7 and need a full repair, you must use the CheckHealth option with a source media (a Windows 7 DVD).
Repair-WindowsImage -Online -RestoreHealth DISM requires arguments in a specific order
DISM requires elevated permissions to access and repair system files. If you run it in a standard user window, it will fail with Error 87. Click the menu and type cmd .
net start wuauserv net start cryptSvc net start bits net start msiserver Use code with caution.
Attempt to run DISM.exe /Online /Cleanup-Image /RestoreHealth again. Fix 5: Use DISM via Windows PowerShell Open the Administrator Command Prompt
Ensure there is a space before /Online , /Cleanup-Image , and /RestoreHealth .
If DISM binary mismatch suspected:
