Fix afd.sys Blue Screen Error Step by Step

Frustrated by the afd.sys error message? Well, you should want to know what this afd.sys file is, what causes this error and the most important thing is how to fix this error. In this page, you will find all answers to your questions about this afd.sys and the methods to fix it.

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What's afd.sys File?

As its file extension denotes, afd.sys is a vital SYS file and it's a component of the software Microsoft® Windows® Operating System developed by Windows Software Developer. The latest version of afd.sys file is 5.2.3790.4318 and MD5 value is a383658713c1e425a224302d423b4a15. Microsoft® Windows® Operating System and the Windows will generate afd.sys error when afd.sys file cannot be used due to the removal or corruption of afd.sys file. This error can be seen on Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10.

afd.sys file information:
File Name:   
   afd.sys (Free Scan)
File Description:   
   Ancillary Function Driver for WinSock
Product Name:   
   Microsoft® Windows® Operating System
Product Version:   
   5.2.3790.4318
Company:   
   Windows Software Developer
File md5:   
   a383658713c1e425a224302d423b4a15
File type:   
   sys file
Security Level(0-5):   
   5
OS Infected:   
   Windows
Recommended:   
   Download afd.sys Error Free Scan Tool

Why Do I Receive afd.sys Error?

SYS files like afd.sys file contain code needed to correctly load and configure Windows operating system. Also, they can be part of hardware drivers and contain various instructions to allow Windows to work flawlessly with hardware and devices.

SYS files run in the kernel-mode that is the highest possible privilege on Windows operating system. Without SYS files like afd.sys, it will be very difficult for your Windows system to run. Any error in these files can cause great harm and data loss.

Popular afd.sys Error Messages

  • PAGE_FAULT_IN_NONPAGED_AREA STOP 0×00000050 afd.sys.
  • NTFS_FILE_SYSTEM STOP 0×00000024 afd.sys.
  • DRIVER_IRQL_NOT_LESS_OR_EQUAL STOP 0×000000D1 afd.sys.
  • SYSTEM_SERVICE_EXCEPTION STOP 0×0000003B afd.sys

afd.sys blue screen errors usually happen when you install a new hardware or software. You may receive afd.sys blue screen errors when you run or close Microsoft® Windows® Operating System, start or shut down the computer, or use specific function of Microsoft® Windows® Operating System. The time you encounter the error is very important to troubleshoot the problem.

Causes of afd.sys Error

afd.sys error can be caused by plenty of reasons. The following are the most common causes of afd.sys error.

  • Device drivers of afd.sys is not correctly installed and compatible.
  • The registry settings of afd.sys are changed or corrupted.
  • Computer malware attacked and damaged afd.sys file.
  • Other system files are damaged or corrupted after the software that uses afd.sys is installed.
  • There is a problem with your hard disk or memory (RAM).

How to Fix afd.sys Error?

Keep in mind, never download SYS files from SYS download websites, because they are not verified by their developers and may contain malicious code which lead to further damage to your computer system. We have listed several solutions to troubleshoot your afd.sys problem.

Method 1: Test for hard disk corruption.

Usually, afd.sys blue screen errors are caused by problems with your hardware devices or issues with low-level software running in the Windows kernel. Many reasons can cause errors on your hard disk, such as shutting down the computer irregularly, removing USB devices without using Safely Remove, and wrong version of device drivers. Fortunately, there is a utility called chkdsk (short for Check Disk) that can scan for errors and fix potential problems.

Steps:

a. Open an elevated command prompt.

Windows Vista and Windows 7

Click Start, click All Programs, Accessories, and then right click Command Prompt and click Run as administrator.

command prompt windows 7

Windows 8, Windows 8.1 and Windows 10

Open Win X menu by holding Windows and X keys, and then click Command Prompt (Admin).

windows8 win x menu

b. After confirming the UAC prompt, type chkdsk /f in the Command Prompt and hit Enter.

chkdsk

c. Chkdsk is scanning your system and takes some time to complete the repair.

Method 2: Do a System Restore.

System Restore is another useful utility integrated in Windows to help users revert their system files, installed applications, Windows registry and settings to that of a previous point of time. It's often used to fix problems like afd.sys error caused by unexpected change made by a new program installation or abnormal Windows behaviors.

Note: Please do a full backup before performing System Store, otherwise, you may risk losing your files and data.

Steps:

a. Go to the desktop of your system, right click on Computer and click Properties.

computer properties

b. In the left pane, click System protection.

system protection

c. In the System Properties window, click System Restore.

system restore

d. In the System Restore window, click Next.

system restore next

e. From the list of restore points, select one you wish to restore from. Click Next.

select restore point

f. If you do not want to change your decision, then click Finish.

confirm system restore

g. Click Yes.

yes restore

Method 3: Run a virus scan.

Malware infection is one of the most popular cause of various computer problems like afd.sys error. Computer malware can make their way into the system, change system settings and corrupt system files. When this happens, Microsoft® Windows® Operating System and Windows becomes more prone to afd.sys error and even malfunction.

Steps:

a. Restart your system into Safe Mode with Networking.

b. Open your antivirus or antispyware program. (You can also use this recommended malware detect tool)

c. Run a full scan for your system.

d. After the scan completes, either quarantine or remove any detected malware.

e. Restart your system.

Method 4: Install Windows updates.

Computers and computer software can quickly become out-dated, so Microsoft keeps releasing updates in order to improve their security and fix technical glitches. Your afd.sys error may be fixed after you install all latest Windows updates.

Steps:

a. Go to the desktop of your system, right click on Computer and click Properties.

computer properties

b. In the left pane, click Windows Update.

windows update

c. In the Windows Update window, click Check for updates.

check for updates windows 7

d. If any update is found, click Install updates to install.

install updates windows 7

Method 5: Reinstall Windows system.

Reinstalling Windows is an easy yet time-consuming way to fix software problems on your computer. It will erase everything on your computer, including your files, programs installed, and computer settings. This should be the last choice to fix your afd.sys error, as it will take a lot of time to make things ready again. And this works only when this error is caused by software problem.

Method 6: Repair corrupted Windows registry.

As the most important part of Windows operating system, Windows registry is a place that stores all information and configurations of software and hardware. A problematic registry is one of the most common causes of computer errors like afd.sys error. Software installation, uninstallation, malware infection can make changes to the registry. Over time, more and more invalid entries are left and accumulated in the registry and then lead to various errors and problems. The registry needs regular maintenance to keep it tidy and stable. Manual editing the registry is not practical for people with no computer expertise, it's recommended that you use a registry cleaner to do this job.

Recommended:

Note: It requires certain computer knowledge to perform the above solutions. If you're not comfortable with this process, it's recommended that you download and run this automatic error fix utility to fix your PC problems automatically:

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Does afd.sys error still persist?

Feel free to contact us for more assistance.

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