What is a4s2.sys?
a4s2.sys is part of Microsoft(R) Windows NT(TM) Operating System and developed by Microsoft Corporation according to the a4s2.sys version information.
a4s2.sys's description is "A4S2 Scanner EPP Driver"
a4s2.sys is usually located in the 'C:\WINDOWS\system32\drivers\' folder.
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.
Vendor and version information [?]
The following is the available information on a4s2.sys:
| Property | Value |
|---|---|
| Product name | Microsoft(R) Windows NT(TM) Operating System |
| Company name | Microsoft Corporation |
| File description | A4S2 Scanner EPP Driver |
| Internal name | A4S2.sys |
| Original filename | A4S2.sys |
| Legal copyright | Copyright (C) Microsoft Corp. 1981-1996 |
| Product version | 4.00 |
| File version | 4.00 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Microsoft(R) Windows NT(TM) Operatin.. |
| Company name | Microsoft Corporation |
| File description | A4S2 Scanner EPP Driver |
| Internal name | A4S2.sys |
| Original filename | A4S2.sys |
| Legal copyright | Copyright (C) Microsoft Corp. 1981-1.. |
| Product version | 4.00 |
| File version | 4.00 |
Digital signatures [?]
a4s2.sys is not signed.
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 06e0a123ca44e19a11b5d4eb6f908cf8 |
| SHA256 | 574689be1bb8cca44f6649c381ac6038d6c67bcb8c220fe8c70671a878372548 |
What will you do with a4s2.sys?
To help other users, please let us know what you will do with a4s2.sys:
What did other users do?
The poll result listed below shows what users chose to do with a4s2.sys. 50% have voted for removal. Based on votes from 2 users.
NOTE: Please do not use this poll as the only source of input to determine what you will do with a4s2.sys. Only 2 users has voted so far so it does not offer a high degree of confidence.
Malware or legitimate?
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
And now some shameless self promotion ;)
Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.
If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.
Comments
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.
No comments posted yet.