If the error persists after checking your spelling and permissions, utilize the following steps: Step 1: Run the System File Checker (SFC)
The most effective way to fix this error is to ensure the command is typed exactly as required. How to Fix DISM Error 87 in Windows
If DISM binary mismatch suspected:
DISM is used to service and prepare Windows images (.wim), virtual hard disks (.vhd/.vhdx), and running operating system images. Error 87 is a generic parameter/syntax error returned by DISM when it detects incorrect command usage, unsupported options for the chosen target, mismatched architecture, or environment issues such as corrupted system files or incompatible DISM versions.
DISM /Online /Cleanup-Image /CheckHealth dism error 87 fixed
💡 : 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?
If you are unsure about a specific DISM switch, let DISM teach you the correct format. If the error persists after checking your spelling
If you've worked through all the steps and are still seeing Error 87, try these advanced checks:
DISM requires elevated privileges to function. DISM /Online /Cleanup-Image /CheckHealth 💡 : If the
Which (Windows 10, 11, or an older version) are you currently running?
often appears when you type the command incorrectly. The most common fix is to run the proper command: