What is sasnative32.exe?

sasnative32.exe is digitally signed by Systweak Inc.

sasnative32.exe is usually located in the 'C:\Windows\system32\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about sasnative32.exe.

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 [?]

sasnative32.exe does not have any version or vendor information.

Digital signatures [?]

sasnative32.exe has a valid digital signature.

Signer nameSystweak Inc
Certificate issuer nameVeriSign Class 3 Code Signing 2004 CA
Certificate serial number5af6648dcb33b9244f7469c73ea722ac

VirusTotal report

None of the 53 anti-virus programs at VirusTotal detected the sasnative32.exe file.

None of the 53 anti-virus programs detected the sasnative32.exe file.

Folder name variants

sasnative32.exe may also be located in other folders than C:\Windows\system32\. The most common variants are listed below:

Hashes [?]


Error Messages

These are some of the error messages that can appear related to sasnative32.exe:

sasnative32.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

sasnative32.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.

sasnative32.exe has stopped working.

End Program - sasnative32.exe. This program is not responding.

sasnative32.exe is not a valid Win32 application.

sasnative32.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with the file?

To help other users, please let us know what you will do with the file:

What did other users do?

The poll result listed below shows what users chose to do with the file. 45% have voted for removal. Based on votes from 186 users.

User vote results: There were 84 votes to remove and 102 votes to keep

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

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.

bem writes

0 thumbs

Your info on sasnative32.exe made me realize that it had been installed by Systweak's Advanced System Protector. I've had that disabled and have been searching off and on for the longest time, fearing it was something malicious. All I could find was fear-mongering and offers to sell questionable programs. Yours was the ONLY informative post I found anywhere on the web. Thanks much!

# 23 Jun 2009, 15:56

Roger Karlsson writes

-2 thumbs

@bem: I'm happy to hear you like the FreeFixer site.

# 24 Jun 2009, 1:42

Jay Smith writes

0 thumbs

Belongs to advanced sys optimizer - (reg run "partizan" boot watch is better- and it's free) ,,, so I will remove

# 5 Nov 2009, 15:16

wlodzimierz bugaj writes

-2 thumbs

I need this file because my Vista is giving me an alert about

# 26 Nov 2009, 7:37

Pal Al writes

0 thumbs

Thanks for the FreeFixer, it’s 1 more weapon against Malware.
Checked sasnative32.exe out with Virustotal (Virustotal.com)—something everyone should do when in doubt, & it is always free & usually fast—& no malware found with sasnative32.exe (0 out of 41)

# 28 Feb 2010, 4:16

BobFriendly writes

0 thumbs

Thanks very much for providing this informative site. I too had a skip autocheck not finding sasnative32 which is left behind after an uninstall of ASO as described by "bem" above.
If you have or want to rid yourself of the check window you can use Autoruns, by systeminternals, available from


if you run the program and choose the Bootexecute tab after the scan has finished, you can disable the annoying window at startup.

Hope this is of help.

# 17 Apr 2010, 1:12

Creepykillaz writes

-1 thumb

Thanks BobFriendly, I used autoruns and removed the autocheck. It took 5 seconds. I am keeping the program for any other annoyances.


# 27 Jun 2010, 13:43

Robert Armstrong writes

-2 thumbs

At (before)startup (in XP) I was getting a message "sasnative32 not found skipping autocheck". I found a copy of sasnative32 on a old backup - installed it - and no more messages. But what is it? Is it a MicroSoft file? Is it a problem? Is it slowing my computer down? Should my computer work without it?

# 21 May 2011, 20:27

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