Dism Error 87 Fixed ✦ Validated & High-Quality

Let’s walk through a real scenario. A user types:

DISM /online /cleanup-image /restorehealth /source:e:\sources\install.wim

Result: Error 87

Diagnosis: Missing WIM: prefix and image index. dism error 87 fixed

Corrected command: DISM /Online /Cleanup-Image /RestoreHealth /Source:WIM:e:\sources\install.wim:1

Result: DISM works successfully.

Conclusion

DISM Error 87 can be frustrating, but it can be resolved by following the methods outlined in this article. By running DISM with administrative privileges, checking and fixing corrupted system files, checking for conflicting software or services, updating Windows and DISM, and running SFC and DISM in Safe Mode, you should be able to fix the error and continue using the DISM tool without issues. If the error persists, you may need to seek further assistance from Microsoft support or a professional technician.

DISM error 87 usually occurs because the system doesn't understand the command you've entered. The most common fix is simply correcting the command's syntax and spacing. 1. Check Command Syntax and Spacing

The most frequent cause is missing spaces before the forward slashes (/). Windows Command Prompt is very strict about this. ❌ Wrong: DISM/Online/Cleanup-Image/RestoreHealth ✅ Correct: DISM /Online /Cleanup-Image /RestoreHealth Let’s walk through a real scenario

Ensure there is a single space before every slash in the command. 2. Run as Administrator

DISM requires "elevated" privileges. If you just open a standard Command Prompt, it will fail with error 87. Click the Start menu and type cmd. Right-click Command Prompt and select Run as administrator. Click Yes if a User Account Control (UAC) prompt appears. 3. Enable the Windows Modules Installer Service

If the syntax is correct but the error persists, the service responsible for Windows updates and repairs might be disabled. How to Fix DISM Error 87 on Windows 10 - PCrisk.com Conclusion DISM Error 87 can be frustrating, but

DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim /LimitAccess

If you’ve tried all six fixes and still see error 87, try these advanced steps.