Dism Error 87 Fixed !!install!! Jun 2026

DISM /Online /Cleanup-Image /RestoreHealth /Source:WIM:"F:\sources\install.wim":1 /LimitAccess

Sometimes PowerShell handles these commands better than the traditional Command Prompt.

Sometimes, the spacing is perfect, but the error remains. Here are the common hurdles users face:

: Right-click Command Prompt or PowerShell and select Run as Administrator . dism error 87 fixed

PowerShell handles paths and parameters differently. Open PowerShell as admin and run:

💡 : If the command still fails, try running SFC /scannow first to fix basic file corruption before retrying DISM. To help you get this running, could you tell me: Which exact command were you trying to type? Are you using Command Prompt or PowerShell ? What version of Windows are you on?

An outdated operating system can trigger compatibility issues with DISM. Open ( Win + I ). Navigate to Windows Update. Click Check for updates and install any pending packages. Restart your computer. 📊 Summary of Common Errors What Happens How to Fix It Missing Spaces DISM/Online... throws Error 87. Add a single space before every / symbol. Windows 7 Usage /RestoreHealth is unsupported on Win 7. PowerShell handles paths and parameters differently

If you still get Error 87, your local Windows image component store might be completely broken. In this scenario, you must tell DISM to fetch repair files from an external, healthy source—like a Windows installation USB or ISO file—rather than using Windows Update. How to use a clean Windows Source:

A clean Windows reinstallation would almost certainly fix it, but it is an extreme and unnecessary step. As detailed above, Error 87 is almost always fixable with correct syntax, administrative privileges, or by resetting update components.

DISM/Online /Cleanup-image/RestoreHealth (Missing spaces) Common Typos to Watch For: Are you using Command Prompt or PowerShell

Rarely, the DISM module itself is damaged. Run:

This error typically stems from simple formatting mistakes, corrupted command-line binaries, or restrictive system permissions. Below is the comprehensive guide to understanding, troubleshooting, and permanently fixing DISM Error 87. What is DISM Error 87?

You must specify the /Image parameter pointing to your installed OS drive.

Once finished, try the DISM /Online /Cleanup-Image /RestoreHealth command again. Summary Checklist to Avoid Error 87 What to Check Ensure a space exists before every / . Permissions Always use "Run as Administrator". Command Use /Online first, then /Cleanup-Image . Spelling Check for typos in /RestoreHealth or /ScanHealth .

Many users try to fix Windows Update corruption using a mounted ISO (Installation Media). This is where Error 87 hides most frequently. Let's break down the correct syntax.