What is sifxinst.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the sifxinst.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Sifxinst.exe file information

Windows Task Manager with sifxinst
Sifxinst.exe process in Windows Task Manager

The process known as Self-Installing File belongs to software PrismXL Software Family or PC Updater by New Boundary Technologies ( or LANovation.

Description: Sifxinst.exe is not essential for Windows and will often cause problems. Sifxinst.exe is located in a subfolder of "C:\Program Files"—mostly C:\Program Files\SIFXINST\. Known file sizes on Windows 10/8/7/XP are 729,088 bytes (86% of all occurrences) or 569,344 bytes. 
The program has a visible window. The application starts upon Windows startup (see Registry key: MACHINE\User Shell Folders). The sifxinst.exe file is not a Windows core file. sifxinst.exe appears to be a compressed file. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Uninstalling this variant: You could uninstall the software Do More using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program).

Recommended: Identify sifxinst.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as sifxinst.exe. Therefore, you should check the sifxinst.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

It will self install, And i think it to have Spyware and some sort of keylogger. Most spyware removal kits will not work, I use Spysweeper. But it keeps regenerating I have found files missing, And when i got back to the computer after 15 minutes, I got a notification that said " You have 19 programs running". i looked in the taskbar, And winamp had been opened 19 times.
  Billy Duff  
Not at all necessary
Used by PC Updater. This program allows software to be installed on computers. It is designed to be used in a corporate network to assist the system administrator in updating software on all computers. From the date of the file, it came preloaded on my Gateway computer. "Since a PC Updater distribution file can be sent to any PC and over any network, companies can now expand their software distribution outside the corporate walls." I consider this program not needed and a potential security threat.
  Paula Bennett, CISSP   (further information)
2003 New Boundary Technologies, Inc. PrismXL Software Family. Seems to be harmless, but the folder is hidden even when hidden folders are shown.
I don't really know-I found it on my computer as I was going around, trying to fix steam. Looked a little weird ("self-install?" that can't be good)
It is a Trojan. Must Delete ASAP
  Alicia   (further information)
It's spyware. Go to the site
  Rich   (further information)
It's a remote access program that comes pre-installed on your computer. You can choose to delete it. I suggest just disabling it. You might 1 day want your manufacturer to access it instead of having to ship it off should anything ever happen to it. But I do agree with you who say it could also pose a threat too.
  Chris Perriman  
Potentially a backdoor into your system, allowing whoever had control of it to be able to add programs to your computer without the users permission. Potentially Dangerous, I just deleted it.
I work at New Boundary. It is a net admin tool as Bennett described. A number of PC makers OEMed our tool for use in production. The file is harmless. It is not a trojan or virus or rootkit. See our website for more information. We have been around since 1985.
  Paul Newell, VP   (further information)
My Kaspersky updated on 240711 found de on Sifxinst.exe.
  Jesús Hernández   (further information)
avg alerted this as a trojan on my system yet the other antivirus softwares did not. Anytime i went to heal it froze the system. Went into the hidden files in the C drive to get rid of it
the file is harmless but its folder can accomodate files such as ValueSup.exe which is a trojan, or conima.exe
  Karl Smallshaw  
It is listed as the original name of the Avast installer that downloaded when I clicked the blue "GO TO DOWNLOAD" button at My computer blocked it. I've not unblocked it because I am now suspicious.
  SW   (further information)

Rating chart

Summary: Average user rating of sifxinst.exe: based on 12 votes with 14 user comments. One user thinks sifxinst.exe is essential for Windows or an installed application. 3 users think it's neither essential nor dangerous. 3 users suspect danger. 5 users think sifxinst.exe is dangerous and recommend removing it. 3 users don't grade sifxinst.exe ("not sure about it").

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Best practices for resolving sifxinst issues

A clean and tidy computer is the key requirement for avoiding problems with sifxinst. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the sifxinst.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

sifxinst.exe [all]