Dism Error 87 Fixed

Once completed, restart your computer and attempt the DISM command again. 4. Restart the Windows Update Service

Running the Command Prompt as a standard user instead of an Administrator.

This error completely halts the system repair process. Fortunately, it is rarely caused by hardware failure. It almost always stems from simple command typos, formatting mistakes, or restricted system permissions.

Where :1 is the image index (usually 1 for Home, 2 for Pro, etc.). dism error 87 fixed

Windows repair tools are powerful, but they demand precision. Keep this guide bookmarked, and the next time you see , you’ll know exactly what to do.

DISM commands are highly sensitive to formatting. You must place a space every forward slash ( / ).

dism /online /cleanup-image /restorehealth (Run in standard PowerShell) Error: 87 (Misleading) Diagnosis: The user was not an Administrator. Without elevation, DISM sometimes returns Error 87 instead of "Access Denied." Fix: Right-click Command Prompt > Run as Administrator. Once completed, restart your computer and attempt the

The most common cause is a simple typo or missing space. The command prompt is strict about spacing . DISM /Online /Cleanup-Image /RestoreHealth Common Mistakes: Missing spaces before each forward slash / . Using dashes - instead of slashes / . Combining terms (e.g., DISM/Online ) . 2. Run as Administrator

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

The dreaded is almost always a minor syntax error or a misunderstanding of how WIM files and parameters work. It is rarely a sign of deep system corruption. This error completely halts the system repair process

Stop the update services by running these commands one by one (press Enter after each): net stop wuauserv Use code with caution. net stop bits Use code with caution. Restart the services with these commands: net start wuauserv Use code with caution. net start bits Use code with caution. Run your DISM repair command again. 5. Use the Correct DISM Command Variant

DISM /Online /Cleanup-Image /RestoreHealth /Source:E:\sources

: Attempting to run DISM from a standard terminal window instead of an elevated Administrator window. 4 Ways to Fix DISM Error 87

DISM /?

❌ DISM.exe /Online /Cleanup-Image /RestoreHealth (Missing spaces before the slashes) ✅ Correct: DISM.exe /Online /Cleanup-Image /RestoreHealth How to run it correctly: