Free - Portable - No Installation Required

File Unlocker for Windows

Instantly unlock files locked by other processes. Fix "the file is in use by another process" errors, delete stuck files, and take back control of your system - without a reboot.

Download Free How to Use
Windows 10/11 (64-bit) 10.5 MB Virus Free

What is File Unlocker?

A lightweight Windows utility that releases files held open by running processes.

ScanWith File Unlocker is a free portable Windows utility that solves one of the most frustrating problems on Windows - files that refuse to delete, move, or rename because another process has them open. Whether it's a stubborn DLL, a media file stuck in Explorer's preview pane, or a document locked by a crashed application, File Unlocker identifies the locking process and releases the handle so you can work with the file again.

The tool queries the Windows Restart Manager API to discover which processes are holding the file, then safely terminates or releases the handles - no reboot required. It runs as a single portable executable, so there's nothing to install and nothing left behind when you're done.

Key Features

Everything you need to handle locked files on Windows.

Instant File Unlocking

Release any file locked by another process in seconds. No reboot, no safe mode, no command line gymnastics.

Process Detection

Identifies exactly which processes are holding your file open using the Windows Restart Manager API.

100% Portable

Single executable, no installation required. Run it from a USB drive or your desktop - it leaves zero traces.

Simple Interface

Drag and drop a file or browse to it. Clean graphical interface with no clutter or ads.

Lightweight & Fast

Just 10.5 MB, uses minimal RAM, and responds instantly. Built for speed and efficiency.

Safe & Open Source

Based on open-source code with transparent behaviour. Uses only documented Windows APIs - no tricks, no hooks.

When to Use File Unlocker

Common scenarios where this tool saves the day.

  • "The file is in use by another process" error
  • "Access is denied" when deleting files
  • Cannot delete folders containing locked files
  • Files stuck in Explorer's preview pane
  • Media files locked by crashed video players
  • DLLs locked by background services
  • Log files held open by crashed applications
  • Cannot overwrite files during software updates
  • Office documents still shown as "open" after crash
  • Remove leftover files after uninstalling software

How to Use

Unlock any stubborn file in four simple steps.

Download

Grab ScanWith-FileUnlocker.exe from the download page. No installer, no bundled software.

Run as Administrator

Right-click the executable and choose "Run as administrator" - required to release file handles owned by other users or services.

Select the File

Drag the locked file into the window or use the Browse button to navigate to it.

Unlock

Review the processes locking the file, then click Unlock. The file is released immediately - ready to delete, move, or rename.

Administrator privileges required. Windows restricts access to file handles owned by other processes for security reasons. Always run File Unlocker as administrator, and only unlock files you own or have permission to modify. Force-closing processes may cause unsaved data loss in the affected application.

File Information & Requirements

Verify your download with the checksums below.

Filename
ScanWith-FileUnlocker.exe
File Size
10.5 MB
Version
1.0
Platform
Windows 10/11 (64-bit)
License
Free - Open Source
Requires
Administrator rights
SHA-256 Checksum
777b87a6955e484ef005fcc99a9323064d32dcacb46bbfda6f036145b48ad208
MD5 Checksum
732b2561ebc9de69c2298868f7ccef8a

Frequently Asked Questions

Answers to common questions about File Unlocker.

Is File Unlocker really free?
Yes, completely free. No trial, no subscription, no nag screens, no bundled adware. The tool is based on open-source code and distributed at no cost through ScanWith.
Why does it need administrator privileges?
Windows protects file handles owned by other users and system services. To release those handles, File Unlocker must run with elevated privileges. Running as a standard user will only work on files locked by your own processes.
Is it safe to force-unlock a file?
File Unlocker uses the documented Windows Restart Manager API, which is the same mechanism Windows Update uses to release files during upgrades. It's safe for the system, but terminating a process that has unsaved work will lose that work - always close documents properly first when possible.
Will it work on Windows 7 or 8?
This build targets Windows 10 and Windows 11 (64-bit). Windows 7 and 8 are no longer receiving security updates and are not officially supported, though the tool may still run on Windows 8.1 with recent updates installed.
Does File Unlocker work with Windows 11 Explorer?
Yes. The tool works independently of Explorer - you can drag files into the window or browse to them directly, regardless of the Explorer version. It also handles the redesigned context menu in Windows 11 correctly.
Is my antivirus flagging it as suspicious?
Tools that terminate processes and manipulate file handles are sometimes flagged as potentially unwanted by heuristic scanners, because malware also performs similar actions. You can verify the file's SHA-256 hash against the one listed above and scan it with our Threat Scanner to confirm it's clean before running.
Does it leave any traces on my system?
No. File Unlocker is a portable executable - it doesn't write to the registry, install services, or leave files behind. Delete the .exe and it's completely gone.

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Ready to Unlock Stubborn Files?

Download ScanWith File Unlocker now - free, portable, and ready to use.

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