Scan for Component Store Corruption (DISM)

This PowerShell script uses DISM /ScanHealth to check for corruption in the Windows Component Store. It captures the output and searches the logs for any corruption-related entries, optionally saving details to a text file for review.

🔍 Features

• Runs DISM /ScanHealth to check system health

• Logs output to a temporary file

• Searches for corruption-related entries

• Saves details about corrupted files (if found) to a text file

• Useful for early detection of system integrity issues

💻 Script

# Run DISM to check for component store corruption
$logFile = "$env:TEMP\DISM.log"
$corruptFileList = "$env:TEMP\CorruptFiles.txt"

# Run the DISM command and capture the output
$DISMOutput = dism /Online /Cleanup-Image /ScanHealth 2>&1 | Tee-Object -FilePath $logFile

# Look for corruption indicators in the DISM log
$corruptEntries = $DISMOutput | Select-String "corrupt"

# Extract corrupted file paths (if any)
if ($corruptEntries) {
    Write-Output "Corrupt files detected. Extracting details..."

    # Read DISM logs to locate potential corrupt files
    $dismLogPath = "C:\Windows\Logs\DISM\dism.log"
    $foundFiles = Select-String -Path $dismLogPath -Pattern "(.+corrupt:.+)" -AllMatches | ForEach-Object { $_.Matches.Groups[1].Value }

    if ($foundFiles) {
        $foundFiles | Out-File -FilePath $corruptFileList
        Write-Output "Corrupt files list saved to: $corruptFileList"
        Get-Content $corruptFileList
    } else {
        Write-Output "Corruption detected, but no specific files were listed in the logs."
    }
} else {
    Write-Output "No corruption found."
}

📝 Notes

• Admin rights are required to run this script.

• Output files:

  • DISM Output: $env:TEMP\DISM.log

  • Corrupt File List: $env:TEMP\CorruptFiles.txt

• Log parsing may not identify every type of corruption. Always review C:\Windows\Logs\DISM\dism.log manually for critical diagnostics.

Use this script proactively to detect and investigate potential system health problems before they escalate.