Dism Error 87 Fixed [work]

If you are running Windows 7, the command /RestoreHealth . It was only introduced in Windows 8, 10, and 11. Trying to use it on Windows 7 will automatically trigger Error 87 because the parameter is literally incorrect for that operating system.

DISM /Online /Cleanup-Image /CheckHealth

Error 87 was the bane of his existence. In the world of Windows diagnostics, it usually meant one thing: a syntax error. But Mark knew he hadn’t mistyped it. He had run this command a hundred times.

Re-type the command slowly, ensuring there is a space before every / character. Fix 2: Run Command Prompt as Administrator dism error 87 fixed

If the Windows Modules Installer service is stopped, DISM cannot perform its cleanup tasks. Press Win + R , type services.msc , and press . Scroll down and double-click Windows Modules Installer . Set the Startup type to Automatic . Click Start , then click OK . Step 3: Run Windows Update

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

. Windows Command Prompt is notoriously strict; failing to include a space before every forward slash (e.g., DISM/Online instead of DISM /Online If you are running Windows 7, the command /RestoreHealth

Navigate to > Advanced options > Startup Settings > Restart . Upon reboot, press 4 or F4 to enable Safe Mode .

[==========================100.0%==========================] The restore operation completed successfully. The operation completed successfully.

Right-click the and select Terminal (Admin) or Windows PowerShell (Admin) . In the PowerShell window, paste the standard command: powershell Repair-WindowsImage -Online -RestoreHealth Use code with caution. DISM /Online /Cleanup-Image /CheckHealth Error 87 was the

How to Fix DISM Error 87: A Step-by-Step Guide If you’ve tried to repair your Windows image using the Deployment Image Servicing and Management (DISM) tool only to be met with you’re not alone. This is one of the most common DISM errors, and while it looks intimidating, it usually boils down to a simple syntax mistake or a service glitch.

Notice the space before /Online , /Cleanup-Image , and /RestoreHealth . Re-type the command carefully and press . 2. Run Command Prompt as Administrator

If the online repair tool fails, force DISM to use a physical Windows installation media file.

An in-place upgrade reinstalls Windows while keeping your files, apps, and settings intact—and it completely rebuilds the DISM environment.