Fix clfs.sys error in Windows 10 in a few easy steps

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
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  • Blue screen errors are often the result of severe problems with the driver software or with your computer's hardware.
  • Getting the clfs.sys error message on a blue screen is nothing out of the ordinary, but updating clfs.sys related drivers and running a security scan are both viable solutions you may try.
  • Such issues are common, so don’t hesitate to further check our dedicated system errors section.
  • There are plenty of other useful tips we've gathered over the years. You may visit our great Windows 10 errors hub in that regard.
How to fix clfs.sys error in Windows 10

Getting the clfs.sys error message on a blue screen is a common Windows 10 issue which most of the users are having trouble fixing.

You are in luck because you will see below a quick tutorial about the steps you need to take in order to solve it. Well, you get this clfs.sys error message because you have a malfunctioning hardware component.

However, the issue can also appear if you have a problem with one of your drivers. You can find out more about this issue by doing following the given steps as described delow.

How can I solve the clfs.sys error in Windows 10?

1. Update clfs.sys related drivers

  1. Left-click or tap on this link: download DriverDoc application.
    Note: This application will update any clfs.sys related drivers on your Windows 10 device
  2. Install the DriverDoc application and run it on your system.
    Note: In case the DriverDoc application is not working on your Windows device you will have to check manually if you have any driver that might need an update after you upgraded to Windows 10.

2. Run a security scan

  1. Open your antivirus and do a full system scan for any malware or viruses that might be in your system.
    Note: usually when your system registries are damaged in any way thus getting the clfs.sys error message might be caused by a virus or a malware infection.
  2. After the scan is completed reboot the Windows 10 computer.
  3. Check and see if you still get the same clfs.sys error message.

3. Restore your system to a previous point

  1. Move the mouse cursor over to the upper right side of the screen.
  2. After the Charms bar has shown you will need to left click or tap on the Search feature.
  3. Write in the search box the following: Control Panel.
  4. Left-click or tap on the Control Panel icon.
  5. In the Control Panel search box enter the following: Recovery.
  6. Left-click or tap on the Open system Recovery feature.
  7. Follow the instructions on the screen to restore your Windows 10 to an earlier point in time when your registry files were not damaged and you did not have the clfs.sys error message.

4. Run an SFC scan

  1. Move the mouse over to the upper right side of the screen.
  2. Left-click or tap on the Search feature.
  3. In the search box, you will need to write the following: Command Prompt.
  4. After the search is finished you need to right-click on the Command Prompt and select the Run as administrator feature.
  5. If you are prompt by a user account control window you will need to left-click on the Yes button to allow this application to open.
  6. In the command prompt window, you need to write the following: sfc /scannow.
  7. Press the Enter button on the keyboard.
  8. It will take a couple of minutes until the system file checker is finished.
  9. After it is finished you will need to reboot your Windows 10.
  10. See if it fixed your clfs.sys error message after the sfc scan was performed.

scannow command has stopped before the process finished? Don’t worry, we’ve got an easy fix for you.


5. Run a disk check

  1. Move the mouse cursor over to the upper right side of the screen.
  2. Left-click on the Search feature you have available there.
  3. In the search box, you will need to write Command Prompt.
  4. Right-click on the Command prompt icon and select the Run as administrator feature.
  5. Left-click or tap on the Yes button if a user account control window pops up.
  6. In the command prompt window write the following: chkdsk /f.
  7. Press the Enter button on the keyboard.
    Note: This process will check your disk for any errors it may have on it and it will try to fix them.
  8. After the check process is completed you will need to close the command prompt window and reboot the Windows 10 PC.

6. Check if your RAM is corrupted

  1. Download Windows MemTest86 USB image.
  2. Extract it from the ZIP file on your PC.
  3. Insert an EMPTY USB stick into your computer.
  4. In the extracted folder (MemTest86) run the imageUSB tool and choose your USB stick so it becomes bootable.
  5. Restart your PC with the USB drive as main bootable device.
  6. Follow the commands from the screen while MemTest86 will check for memory issues.

You have above a couple of options that you can try in order to fix your clfs.sys error message in Windows 10.

Also, you can write us below in the comments section of the page any questions that you may have on this subject and we will help you further with this issue as soon as possible.

FAQ: Learn more about blue screen errors

  • How do you prevent a blue screen?

To prevent blue screen errors, make sure all software is compatible and that your drivers are up to date. Use this simple guide to update drivers like a pro.

  • Are blue screens normal?

Blue screens are anything but normal. Your computer’s Windows OS knows that something could cause real harm and it stops everything, letting you take immediate action.

  • Can Blue Screen Of Death fix itself?

There are times when a BSoD solves without any actions from users’ end. If this doesn’t happen, use these software solutions to fix Blue Screen of Death errors.

Editor’s Note: This post was originally published in July 2018 and has been since revamped and updated in March 2020 for freshness, accuracy, and comprehensiveness.

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