Dism Error 87 Fixed Guide

According to analysis, the "parameter is incorrect" error is rarely a symptom of deep system corruption, but rather a syntax or permission issue:

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The command line cursor blinked once, twice, and then spat out the hateful message: The restorehealth option is not recognized in this context. dism error 87 fixed

DISM /Online /Cleanup-Image /RestoreHealths ❌ (extra "s" on RestoreHealth)

DISM /Online /Cleanup-Image /ScanHealth (Missing spaces before the slashes) DISM/Online/Cleanup-Image/RestoreHealth (No spaces at all) Correct Syntax Examples You must place a single space : DISM /Online /Cleanup-Image /CheckHealth DISM /Online /Cleanup-Image /ScanHealth DISM /Online /Cleanup-Image /RestoreHealth Method 2: Run Command Prompt as Administrator According to analysis, the "parameter is incorrect" error

Before jumping into the fixes, it helps to understand why Windows is throwing this error. DISM Error 87 is almost always a user-input or environment issue rather than a hardware failure. The most common causes include:

Run SFC:

Sometimes, if the underlying Windows Update service is disabled or hung, DISM (which relies on it for source files) cannot complete the request. How to Fix DISM Error 87 1. Check Your Spacing (Most Likely Fix)

Ensure spaces before every / and include the dash in /Cleanup-Image . Right-click CMD and select "Run as administrator". Outdated Windows Install all pending updates in Settings. Service Stopped Enable "Windows Modules Installer" in Services. Incorrect Environment Use /Image instead of /Online if in Recovery Mode. The most common causes include: Run SFC: Sometimes,

sfc /scannow