What is netsession_win.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 netsession_win.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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Netsession_win.exe file information

Windows Task Manager with netsession_win
Netsession_win.exe process in Windows Task Manager

The process known as Akamai NetSession Client belongs to software Akamai NetSession Client or Fallout Collection by Akamai Technologies ( or Akamai NetSession Client, Akamai Technologies (

Description: Netsession_win.exe is not essential for the Windows OS and causes relatively few problems. Netsession_win.exe is located in a subfolder of "C:\Documents and Settings". Known file sizes on Windows 8/7/XP are 4,489,472 bytes (20% of all occurrences), 4,441,920 bytes and 12 more variants. 
It is not a Windows system file. Netsession_win.exe is digitally signed. The program has no visible window. The process is loaded during the Windows boot process (see Registry key: Run, DEFAULT\Run). Netsession_win.exe is able to monitor applications. Therefore the technical security rating is 45% dangerous, however you should also read the user reviews.
In case of problems with netsession_win.exe, you can also search the support area on the Poweroffer website, find out if there is a newer version [1][2] available or uninstall PowerOffer or Mozilla Firefox from your computer using the Control Panel applet "Add/Remove programs".

Recommended: Identify netsession_win.exe related errors

Important: Some malware camouflages itself as netsession_win.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the netsession_win.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

The Akamai NetSession Interface is secure client-side networking technology that enhances networking protocols for delivery of software and media, improving the speed, reliability, and efficiency of content downloaded from the Web.
  meetoo   (further information)
Bei der Installation von S4 League enthalten, ungefährlich
An Akamai program installed by Dell to help download some files; it can usually be removed through the control panel, 'Add/Remove Software.' It appears to like to run though not really needed for anything.
This came from Dell's driver update tool that scans for current drivers.
Lese den Abschnitt "Kritik" bei Wikipedia (Google Chrome?)
  Christian   (further information)
It is a P2P software that constantly uploads and downloads content for various companies. No disclamers or installers refer to it in its installation, the website is really sketchy about its uses and functions, and it installed on a day my computer was offline.
  Spoon   (further information)
Seems to be part of 'Need for Speed World'

Rating chart

Summary: Average user rating of netsession_win.exe: based on 7 votes with 7 user comments. 3 users think netsession_win.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 2 users think it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving netsession_win issues

A clean and tidy computer is the key requirement for avoiding problems with netsession_win. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the netsession_win.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

netsession_win.exe [all]