What is ioport?

The genuine ioport.sys file is a software component of IOPort by Erik Salaj.
IOPort is a .NET component for access to I/O and memory-mapped ports. The application provides: access to I/O and memory-mapped ports on 32 and 64-bit Windows; new PnP device drivers built using the newest Microsoft KMDF WDK framework; block data transfer enabling high speed data transfer; and a DirectAccess mode providing the fastest access to I/O ports (32-bit Windows only).

IOport stands for Windows NT I/O port driver

Ioport.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 ioport.sys is a Windows system file or if it belongs to an application that you can trust.

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

Ioport.sys file information

The process known as Windows NT I/O port driver or IO_Memory belongs to software IOPort by Erik Salaj (

Description: Ioport.sys is not essential for the Windows OS and causes relatively few problems. The ioport.sys file is located in the C:\Windows\System32\drivers folder. The file size on Windows 10/8/7/XP is 6,144 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows system file. ioport.sys appears to be a compressed file. Therefore the technical security rating is 40% dangerous, however you should also read the user reviews.

Recommended: Identify ioport.sys related errors

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

I need this file.
parallel port driver
  Barry de Graaff  
Used to interface USB foot pedal to SUM Medical Transcription Training Programs
  Kathleen Williams  
habe Probleme damit

Rating chart

Summary: Average user rating of ioport.sys: based on 12 votes with 4 user comments. 10 users think ioport.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. 2 users don't grade ioport.sys ("not sure about it").

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Best practices for resolving ioport issues

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

ioport.sys [all]