Over time, your Windows computer accumulates temporary files, cache files, log files, and other unnecessary data that can slow down performance and take up valuable storage space. Cleaning these junk files regularly ensures your system operates smoothly and remains stable.In this guide, you’ll learn how to use a simple batch script to automate the process of cleaning junk files, freeing up space, and enhancing system performance.

This batch script automates the process of cleaning up various types of junk files from your system, including temporary files, cache files, system logs, and Windows update leftovers. By running this script, you can eliminate the need to manually delete these files, saving time and effort.

Why Is Cleaning Junk Files Important?

• Free Up Disk Space: Temporary files, cache files, and logs can consume gigabytes of space. Deleting these files helps free up your hard drive for more essential data, especially on systems with limited storage.

• Improve Performance: Excessive junk files can slow down your computer, especially when accessing frequently used applications. Regular cleanups restore system responsiveness and boost speed.

• Ensure Stability: Accumulated junk files can lead to software glitches, system errors, or application crashes. Removing these files reduces such risks and ensures a stable computing experience.

Main Cleanup Targets

1. System Drive Temporary Files

• Deletes .tmp, .log, .bak, .old, and .chk files.
• Removes leftover files to maximize disk space.

2. Windows System Folder Files

• Clears prefetch files for faster application startup.
• Deletes cached Windows Update files from SoftwareDistribution.
• Removes event logs and firewall logs to reduce disk clutter.

3. User Temporary Files and Cache

• Cleans up %temp% and %windir%\Temp directories.
• Deletes browser-related files, cookies, and Explorer cache for privacy and space.
• Removes residual files from Microsoft Store and application caches.

How to Use This Cleanup Script

1. Create a Batch File

• Open a text editor (e.g., Notepad).
• Copy the script code below and paste it into the editor.
• Save the file as clean_system.bat. Ensure the extension is .bat.

2. Run the Script

• Right-click the saved batch file and choose Run as Administrator.
• The script will start deleting junk files, displaying its progress in a command-line window.

3. Schedule Regular Cleanups

• For optimal results, run this script weekly or monthly.
• Use Task Scheduler to automate execution and keep your system clean effortlessly.

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@echo off
echo Cleaning Windows system junk files, please wait...

:: ------------------------
:: Clean system disk temporary files
:: ------------------------
del /f /s /q %systemdrive%\*.tmp
del /f /s /q %systemdrive%\*._mp
del /f /s /q %systemdrive%\*.log
del /f /s /q %systemdrive%\*.gid
del /f /s /q %systemdrive%\*.chk
del /f /s /q %systemdrive%\*.old
del /f /s /q %systemdrive%\recycled\*.*

:: ------------------------
:: Clean unnecessary Windows system folder files
:: ------------------------
del /f /s /q %windir%\*.bak
del /f /s /q %windir%\prefetch\*.*   
del /f /s /q %windir%\Logs\*.* 
del /f /s /q %windir%\SoftwareDistribution\Download\*.* 
del /f /s /q %windir%\SoftwareDistribution\DataStore\*.* 
del /f /s /q %windir%\Installer\*.log
del /f /s /q %windir%\System32\winevt\Logs\*.* 
del /f /q %windir%\system32\LogFiles\Firewall\*.*

:: ------------------------
:: Clean user-specific temporary files
:: ------------------------
del /f /s /q "%userprofile%\Local Settings\Temp\*.*"
del /f /s /q "%windir%\Temp\*.*"  :: Clean system temporary folder as well

:: ------------------------
:: Clean user cache and temporary files
:: ------------------------
del /f /q "%userprofile%\cookies\*.*"
del /f /q "%userprofile%\recent\*.*"
del /f /s /q "%userprofile%\Local Settings\Temporary Internet Files\*.*"
del /f /s /q "%userprofile%\Local Settings\Application Data\Microsoft\Windows\Explorer\*.*"
del /f /s /q "%userprofile%\AppData\Local\Packages\Microsoft.WindowsStore_*\LocalState\*.*"

echo Cleaning Windows system junk is complete!
echo. & pause

Precautions

• Review Files Before Deletion: Avoid deleting files you’re unsure about. Some files are critical for system or application functionality.

• Backup Your Data: Always back up important data before running cleanup scripts to avoid accidental data loss.

• Test the Script First: Run the script in a safe environment to verify its behavior before using it on important systems.

Regular cleanup of junk files is vital for enhancing system performance, saving storage space, and ensuring stability. With this batch script, you can automate the process and avoid manual effort. Implement this solution today to keep your Windows computer running at its best.