wof.sys - How to Fix? Download Now

Sometimes Windows system displays error messages regarding corrupted or missing wof.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent wof.sys file can therefore effect in failed execution of the started process.

wof.sys file Windows Overlay Filter. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of wof.sys related errors on your device. You can also download wof.sys file compatible with Windows 10, Windows 8.1 devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download wof.sys

4.1 List of wof.sys file versions

File info

General information
Filename	wof.sys
File extension	SYS
Description	Windows Overlay Filter

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Driver
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common wof.sys file related problems

There are various types of errors related to wof.sys file. wof.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to wof.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

wof.sys is corrupted
wof.sys cannot be located
Runtime Error - wof.sys
wof.sys file error
wof.sys file cannot be loaded. Module was not found
cannot register wof.sys file:
wof.sys file could not be loaded
wof.sys file doesn't exist

wof.sys

Application could not be started because wof.sys file is missing. Reinstall the application to solve the problem.

Problems related to wof.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing wof.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix wof.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

wof.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with wof.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to wof.sys file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of wof.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to wof.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the wof.sys file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the wof.sys file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the wof.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace wof.sys file

The last solution is to manually download and replace wof.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded wof.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of wof.sys file example directory paths.

Windows 10: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\drivers\

If the steps did not solve your wof.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename wof.sys

System Windows 10

File size 175520 bytes

Date 2017-03-18

Download

File details
	MD5	e9a87ad52b6f4d3c9d6fdaa58a7bfe40
	SHA1	7f41396d2e383b1696f7ac5252e5e5a7dd8b3d42
	SHA256	338bc7362bd8294258d451ad10ed5a8035c787b8dd64fe6ad4c2eeef2cf96ed6
	CRC32	71660b83
	Example file location	C:\Windows\System32\drivers\

Filename wof.sys

System Windows 8.1

File size 138584 bytes

Date 2014-11-21

Download

File details
	MD5	db3f0877e5c225693a131ae82c262957
	SHA1	0bfb4e18b421ff496ccf119d816e60a7124c1455
	SHA256	bee887ec134f7a27120915f709670fbdc9223e70ea928a0fdc4284fbdfd65adb
	CRC32	6037c780
	Example file location	C:\Windows\System32\drivers\