What is HSF_CNXT?

HSF_CNXT.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if HSF_CNXT.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for HSF_CNXT drivers in need of updating

HSF_CNXT.sys file information

The process known as HSF_CNXT driver or winachsf or WinACHSF driver belongs to software SoftK56 Modem Driver or winachsf by Conexant Systems (

Description: HSF_CNXT.sys is not essential for the Windows OS and causes relatively few problems. HSF_CNXT.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 731,136 bytes (20% of all occurrences), 680,704 bytes and 11 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The service has no detailed description. The file is not a Windows system file. It is a Microsoft signed file. HSF_CNXT.sys appears to be a compressed file. Therefore the technical security rating is 17% dangerous; but you should also compare this rating with the user reviews.

Recommended: Identify HSF_CNXT.sys related errors

Important: Some malware disguises itself as HSF_CNXT.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the HSF_CNXT.sys 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

Modem Driver
  Dale Cheeseman  
its a file that cant be found
is the drivers for modem
WRLogonNTF.dll is a module which belongs to the WebRoot SpySweeper. This is an important module related to system security.
diver for modem
HSF_CNXT.sys is a driver file that's needed by modems on most IBM laptops
  Martinus   (further information)
a don't have tis driver in my machine
the file is needed to install high def audio drivers. but other than that i seem to be missing the file and i cant install the hd audio driver. everything else seem to be workin perfectly though
Load to my computer, because have to missing it`s
  kaarlo Kunnari  
cannot find this file after installing audio drivers for sony vgn series
it it important driver but if correspodent only with designed hardver because this is important software but if you had before vista it doesnt respodent good in xp profesional because of that this is only for xp serial pack 2 or 1 but not 3 the new one what I have.
modem info
  roger peters  
free compaq presario software sound c300
this is a modem Driver
Unnötig, brauch man nich
fax modem driver causing bluescreen
It belongs to the tethered USB files connection for Windows XP.

Rating chart

Summary: Average user rating of HSF_CNXT.sys: based on 40 votes with 17 user comments. 27 users think HSF_CNXT.sys is essential for Windows or an installed application. 11 users think it's probably harmless. 2 users think it's neither essential nor dangerous. 5 users don't grade HSF_CNXT.sys ("not sure about it").

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Best practices for resolving HSF_CNXT issues

A clean and tidy computer is the key requirement for avoiding problems with HSF_CNXT. 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 HSF_CNXT.sys 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

HSF_CNXT.sys [all]