Dism Error 87 Verified -

DISM /online /cleanup-image /restorehealth If a path contains a space: ✅ DISM /online /cleanup-image /restorehealth /source:"E:\sources\install.wim":1 ❌ DISM /online /cleanup-image /restorehealth /source:E:\sources\install.wim:1 (no quotes but path has space – error 87) Step 5 – Verify Parameter Compatibility Not all options work together. Example: /LimitAccess requires /Source to be a WSUS or Windows Update path, not a WIM file. Step 6 – Use PowerShell with Splatting (Optional) To avoid parsing confusion, use a hashtable in PowerShell:

DISM /online /cleanup-image /restoreheath /source:WIM:D:\sources\install.wim:1 Error: 87 – The restoreheath option is unknown. (Fix: restorehealth ) dism error 87

$dismParams = @ Online = $true CleanupImage = $true RestoreHealth = $true Source = "WIM:D:\sources\install.wim:1" dism error 87

DISM /cleanup-image /online /restorehealth dism error 87