Download and Fix WdFilter.sys

Sometimes Windows system displays error messages regarding corrupted or missing WdFilter.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 WdFilter.sys file can therefore effect in failed execution of the started process.

WdFilter.sys file Microsoft antimalware file system filter driver. 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 WdFilter.sys related errors on your device. You can also download WdFilter.sys file compatible with Windows 10, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8

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Fix WdFilter.sys errors

1 Information about WdFilter.sys file
2 Errors related to WdFilter.sys file
3 How to fix WdFilter.sys related errors?

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

4 Download WdFilter.sys

4.1 List of WdFilter.sys file versions

File info

General information
Filename	WdFilter.sys
File extension	SYS
Description	Microsoft antimalware file system filter driver

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 WdFilter.sys file related problems

There are various types of errors related to WdFilter.sys file. WdFilter.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 WdFilter.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

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

WdFilter.sys

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

Problems related to WdFilter.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 WdFilter.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 WdFilter.sys errors in just few steps?

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

WdFilter.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 WdFilter.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 WdFilter.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 WdFilter.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 WdFilter.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the WdFilter.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 WdFilter.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 WdFilter.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 WdFilter.sys file

The last solution is to manually download and replace WdFilter.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 WdFilter.sys file.

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

Windows 10: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\drivers\
Windows 8: 1: C:\Windows\System32\drivers\

If the steps did not solve your WdFilter.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 WdFilter.sys

System Windows 10

File size 243104 bytes

Date 2017-03-18

Download

File details
	MD5	0d56488a66d55624f1aaf7cbd4283eed
	SHA1	c92d2f3884b3fe678e5e76b18c8cd699e9099ba2
	SHA256	b1fb9f733d04ee9a8b8b4b6cbb5ce51dc5e844e8d6435256aed302b18bc6bcff
	CRC32	817cd466
	Example file location	C:\Windows\System32\drivers\

Filename WdFilter.sys

System Windows 8.1

File size 219992 bytes

Date 2014-11-21

Download

File details
	MD5	bbd6df3fc00cacbfa92a4c98ce5c0ccd
	SHA1	425663ef5eeb15e805b1a7255a73b094ccf338bf
	SHA256	cb62fb1e28d6f00546c339c6d3a24b430315e78575fcdeb520d9f0963adc74d1
	CRC32	5913c400
	Example file location	C:\Windows\System32\drivers\

Filename WdFilter.sys

System Windows 8

File size 199920 bytes

Date 2012-07-26

Download

File details
	MD5	357ea02565e599297d3729340fe0f961
	SHA1	9b1d2066abc2316809ebedcacd2435ddb82905ed
	SHA256	caac0e60e84ef1749baec54257562a777d705a10a0f04adc4a13e9ad15755460
	CRC32	b35285e0
	Example file location	1: C:\Windows\System32\drivers\