xlkfs.sys is part of Easy File Locker and developed by XOSLAB.COM according to the xlkfs.sys version information.
xlkfs.sys's description is "File System Filter Driver"
xlkfs.sys is usually located in the 'C:\WINDOWS\system32\drivers\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about xlkfs.sys.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
The following is the available information on xlkfs.sys:
| Property | Value |
|---|---|
| Product name | Easy File Locker |
| Company name | XOSLAB.COM |
| File description | File System Filter Driver |
| Internal name | xlkfs.sys |
| Original filename | xlkfs.sys |
| Legal copyright | Copyright(C) 2008, XOSLAB.COM. All rights reserved. |
| Product version | 1.0.0.1 |
| File version | 1.0.0.1 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Easy File Locker |
| Company name | XOSLAB.COM |
| File description | File System Filter Driver |
| Internal name | xlkfs.sys |
| Original filename | xlkfs.sys |
| Legal copyright | Copyright(C) 2008, XOSLAB.COM. All r.. |
| Product version | 1.0.0.1 |
| File version | 1.0.0.1 |
xlkfs.sys is not signed.
None of the 44 anti-virus programs at VirusTotal detected the xlkfs.sys file.
| Property | Value |
|---|---|
| MD5 | 686e9c3310c5821a10cf5bb6d792b49a |
| SHA256 | a83da2d4dd448e5b2cefb23e2d87897d51adcc35fc21e35e29061224301393cc |
To help other users, please let us know what you will do with xlkfs.sys:
The poll result listed below shows what users chose to do with xlkfs.sys. 52% have voted for removal. Based on votes from 46 users.

NOTE: Please do not use this poll as the only source of input to determine what you will do with xlkfs.sys.
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
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Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.
This seemed to be the case when i had the BOSD.
The problem that occurs is when you have the proection to the on setting within the program and you switch passwords or you delete the protected/watched folder without first disableling the protection. It Give an Exception on the xlkfs.sys
So, when you start chenging settings to file and folders, be sure to disable the protection first.
Sinds then i dit not had any problems with the file locker again.
Hope this works for you too.
# 12 Aug 2016, 2:13
Also I as Sander had the problem when I changed the settings (accessible, writable, deletable and visible) to 2 files without first disabling their protection (switching from the red=stop the protection to the green=start the protection). So to avoid the BOSD you first need to click on the file you don't want to protect anymore, then change the settings (and then eventually turn the protection back on). I have always used this program for years, it has never given me any problems except today. So use it serenely and avoid making the same mistake of ours.
# 13 Dec 2019, 4:24
Interesting reading above. In my case, I did not change protection or do anything with the protected files. I merely clicked on a You Tube video to watch and BOOM, BSOD. The program was running at the time.
# 26 Feb 2023, 15:35
Sander Tieben writes