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Auto-Clean Temporary Files with a BAT Script

Is your Windows PC getting slower over time? One of the simplest and safest “maintenance optimizations” is cleaning temporary files. Windows and apps create temporary data every day, and a lot of it stays on your disk longer than needed.

In this guide, I’ll show you a beginner-friendly BAT (batch) file that automatically:

• Cleans your user TEMP folder (%TEMP%)
• Cleans the Windows TEMP folder (C:\Windows\Temp)
• Empties the Recycle Bin

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What This Script Does (Simple Explanation)

1) Cleans %TEMP% (User Temporary Files)

%TEMP% is a folder used by your current Windows user account. It often contains leftover files from installers, browsers, and apps.

2) Cleans C:\Windows\Temp (System Temporary Files)

C:\Windows\Temp is used by Windows services and installers. Some items may not delete if Windows is currently using them — that’s normal.

3) Empties the Recycle Bin

Deleted files may still sit in the Recycle Bin and take disk space. This script clears it automatically using PowerShell.

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Important Notes (Read Before Running)

• Close running apps before you start to reduce “file in use” issues.
• Some files may fail to delete because they are locked by Windows. This is normal and safe.
• Tip: For best results (especially Windows TEMP), run the BAT file as Administrator.

BAT Script

Open Notepad, paste the code below, then save it as cleanup_temp.bat.

@echo off
chcp 65001 >nul
title Windows Temporary File Auto Cleanup

echo.
echo ==================================
echo   Windows Optimization - Temp Cleanup
echo ==================================
echo.

:: Clean user TEMP folder
echo Cleaning user temporary files...
del /f /s /q "%TEMP%\*" >nul 2>&1
for /d %%D in ("%TEMP%\*") do rd /s /q "%%D" >nul 2>&1

:: Clean Windows TEMP folder
echo Cleaning Windows temporary files...
del /f /s /q "C:\Windows\Temp\*" >nul 2>&1
for /d %%D in ("C:\Windows\Temp\*") do rd /s /q "%%D" >nul 2>&1

:: Empty Recycle Bin
echo Emptying Recycle Bin...
powershell -NoProfile -Command "Clear-RecycleBin -Force" >nul 2>&1

echo.
echo Cleanup completed successfully.
pause

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How to Save the BAT File Correctly

1. Open Notepad
2. Paste the script
3. Go to File → Save As
4. File name: cleanup_temp.bat
5. Save as type: All Files
6. Encoding: UTF-8 (recommended)

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How to Run It

• Normal run: Double-click the .bat file
• Recommended: Right-click → Run as administrator (better Windows TEMP cleanup)

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FAQ (Frequently Asked Questions)

Q1) Is it safe to delete temporary files in Windows?

Yes — temporary files are designed to be disposable. Some files may fail to delete because they are currently in use, which is normal.

Q2) Why doesn’t it delete everything inside C:\Windows\Temp?

Windows and services may lock some temp files while running. Try closing apps and running the script as Administrator. Even then, some locked files may remain until the next reboot.

Q3) Do I need Administrator privileges?

For cleaning %TEMP% you usually do not. For cleaning C:\Windows\Temp more completely, Administrator is strongly recommended.

Q4) How often should I run this cleanup script?

Most users can run it once per week. If you install a lot of software or browse heavily, you can run it 2–3 times per week.

Q5) The command window closes too fast — did it work?

This script includes pause, so it should wait for your input. If you removed pause, add it back to see the final result message.

Q6) Can I schedule this to run automatically?

Yes. You can use Windows Task Scheduler to run the BAT file daily or weekly. If you do, set it to “Run with highest privileges” for better system temp cleanup.

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Conclusion

This is a lightweight and beginner-friendly way to keep Windows clean without installing extra optimization software. Try it once, confirm everything works smoothly, and then run it weekly for simple Windows maintenance.