Using a command that isn't compatible with your version of Windows.
If you are on Windows 7, use this command instead to check your system image: DISM.exe /Online /Cleanup-Image /ScanHealth Use code with caution.
to reset your Windows Update components via the command line?
Run the following command (replace X with the actual drive letter of your mounted ISO): DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:WIM:X:\sources\install.wim:1 /LimitAccess dism error 87 fixed
. This usually means there's a minor formatting error or a lack of administrative permissions. Primary Fixes for Error 87
DISM Error 87 occurs when the command-line parameter entered is invalid or not recognized by Windows
The most common reason for Error 87 is missing a space before the forward slash ( ). DISM commands are very picky about formatting. dism/online/cleanup-image/restorehealth dism /online /cleanup-image /restorehealth Ensure there is a single space before every in your command. 2. The Administrator Requirement Using a command that isn't compatible with your
If you’ve ever tried to repair a Windows system image using the Deployment Imaging and Service Management (DISM) tool, you might have been greeted by a frustrating message:
To help me tailor any further advice, could you share a bit more context?
," and it usually triggers because Windows doesn't recognize the command you just typed. Here is how the story ends with a fix: 1. The Space is the Secret Run the following command (replace X with the
DISM (Deployment Imaging Servicing and Management) is a powerful, built-in Windows tool designed to detect and repair system image corruption, fix broken system files, and maintain the overall health of your operating system. It's a crucial utility that often succeeds when a basic System File Checker ( sfc /scannow ) scan cannot fix corrupted files.
Missing WIM: prefix and image index.
