What is ntos.exe?

ntos.exe is usually located in the 'C:\WINDOWS\System32\' 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 [?]

ntos.exe does not have any version or vendor information.

Hashes [?]


Error Messages

These are some of the error messages that can appear related to ntos.exe:

ntos.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

ntos.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

ntos.exe has stopped working.

End Program - ntos.exe. This program is not responding.

ntos.exe is not a valid Win32 application.

ntos.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with ntos.exe?

To help other users, please let us know what you will do with ntos.exe:

What did other users do?

The poll result listed below shows what users chose to do with ntos.exe. 59% have voted for removal. Based on votes from 114 users.

User vote results: There were 67 votes to remove and 47 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with ntos.exe.

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.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.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.


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.

Roger Karlsson writes

12 thumbs

Here's what the anti-virus programs say about this file:

File: ntos.exe
MD5: 72ea75a351435c70ca846e9c2e87f329
Packers detected: -
Bit9 reports: File not found

Scanner results
Scan taken on 14 Nov 2007 06:55:51 (GMT)
A-Squared Found nothing
AntiVir Found nothing
ArcaVir Found nothing
Avast Found nothing
AVG Antivirus Found SHeur.ZDV
BitDefender Found MemScan:Trojan.Spy.Bancos.AAM
ClamAV Found nothing
CPsecure Found nothing
Dr.Web Found nothing
F-Prot Antivirus Found nothing
F-Secure Anti-Virus Found nothing
Fortinet Found nothing
Kaspersky Anti-Virus Found nothing
NOD32 Found nothing
Norman Virus Control Found nothing
Panda Antivirus Found nothing
Rising Antivirus Found nothing
Sophos Antivirus Found nothing
VirusBuster Found nothing
VBA32 Found nothing

# 14 Nov 2007, 7:39

Keith D writes

5 thumbs

I came across the freefixer program while trying to fight the IS2010 malware. I tried to delete the files with version 0.51 but it did not properly restore the registry. Now I can't log on. I have tried to use the UBCD4win program but I don't have a windows disk to insert when asked. HELP.

# 21 Jan 2010, 10:35

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