How to remove the netsession_win_5891ae0 virus

Most antivirus programs identify netsession_win_5891ae0.dll as malware.

The netsession_win_5891ae0.dll file is a software component of Akamai NetSession Interface by Akamai Technologies.
Netsession_win_5891ae0.dll is a DLL (Dynamic Link Library) file that is part of the Akamai NetSession Interface, a utility tool that offers faster and more reliable downloads. DLL files store data, code and resources needed by one or more programs in order to function correctly. This is not a critical Windows component and should be removed if known to cause problems. The Akamai NetSession Interface works as an extension to Akamai's global server network that helps speed up user downloads by connecting the user to the closest server in physical proximity. The program features negligible impact on memory, CPU capacity or disk space. Akamai Technologies, Inc. is an American company that develops solutions in cloud services. The company offers its services to clients and companies looking for faster websites by distributing content from locations close to the user. Akamai Technologies currently owns numerous servers around the world and rents capacity on these servers to customers. Akamai was founded in 1998 and is based in Cambridge, Massachusetts, USA.

netsession_win_5891ae0 stands for Akamai NetSession Interface for Windows (SHA-1: 5891ae0)

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the netsession_win_5891ae0.dll malware

Netsession_win_5891ae0.dll file information

The process known as Akamai NetSession Client Service appears to belong to software Akamai NetSession Interface Service by Akamai Technologies (

Description: Netsession_win_5891ae0.dll is not essential for Windows and will often cause problems. Netsession_win_5891ae0.dll is located in a subfolder of "C:\Program Files\Common Files". The file size on Windows 10/8/7/XP is 4,537,664 bytes. 
The service can be started or stopped from Services in the Control Panel or by other programs. File is hidden. The program is not visible. The file is digitally signed. The netsession_win_5891ae0.dll file is not a Windows system file. Netsession_win_5891ae0.dll is able to monitor applications. Therefore the technical security rating is 74% dangerous.

Uninstalling this variant: In case of any problems with netsession_win_5891ae0.dll, you can safely remove the program using the uninstall program of Akamai NetSession Interface Service (Control Panel ⇒ Uninstall a Program).

Recommended: Identify netsession_win_5891ae0.dll related errors

Important: You should check the netsession_win_5891ae0.dll 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.


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Best practices for resolving netsession_win_5891ae0 issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active netsession_win_5891ae0 process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the netsession_win_5891ae0.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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 repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

netsession_win_5891ae0.dll [all]