💡 : 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?
Sometimes PowerShell handles these commands better than the traditional Command Prompt.
Right-click and select Run as administrator . Re-type the command in the elevated window. 3. Start the Windows Modules Installer Service
This error typically happens when DISM fails to recognize the command you’ve entered. The good news is that it is almost always fixable, and this comprehensive guide will walk you through the solutions to get your system running smoothly again. What Causes DISM Error 87? dism error 87 fixed
DISM commands are highly sensitive to formatting. You must place a space every forward slash ( / ).
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is one of the most powerful command-line tools built into Windows. It’s your go-to utility for repairing corrupted system images, fixing Windows Update errors, and preparing custom Windows installations. 💡 : If the command still fails, try
If the Windows image file system is unstable, DISM may fail with an error parameter. Running the System File Checker (SFC) first can stabilize the environment. Open the . Type the following command and press Enter : sfc /scannow Use code with caution. Wait for the verification to reach 100%. Restart your computer. Attempt the DISM command again. 3. Revert Pending Windows Updates
Find , right-click it, and select Properties .
Always use DISM /Online /Cleanup-Image /RestoreHealth exactly as written—with the dash in /Cleanup-Image and no space in /RestoreHealth . Master that one command, and you will rarely see Error 87 again. What version of Windows are you on
This error indicates that the operating system cannot process the command because it was entered incorrectly or the system environment prevents it from executing. What Causes DISM Error 87?
This displays a massive list. Scroll through and look for your intended command. For example, if you search for /RestoreHealth and it is not in the list, you are on an older Windows version that lacks that feature.
DISM relies on the Windows Update service to fetch healthy replacement files. If this service is frozen, DISM will fail. Press the to open the Run dialog box. Type services.msc and press Enter . Scroll down and locate Windows Update .
Sometimes, Error 87 appears because the Command Prompt is looking in the wrong system path.