Dism Error 87 Fixed May 2026

If you are in a hurry, here is the TL;DR version to fix DISM Error 87:

No. Error 87 is a command-line parser error, not a hardware failure indicator. dism error 87 fixed

DISM /Online /Cleanup-Image /ScanHealth

✅ Note: There is no space after slashes (/), and RestoreHealth is one word. If you are in a hurry, here is

If you have tried all seven methods and the error persists, consider these edge cases: ✅ Note: There is no space after slashes

Some DISM options are not available in older Windows versions (e.g., Windows 7). For example, /RestoreHealth works on Windows 8 and later. On Windows 7, you need to use the System Update Readiness Tool instead.