What is wanmpsvc.exe?

The genuine wanmpsvc.exe file is a software component of AOL Companion by AOL.
Wanmpsvc.exe is an executable file that belongs to the AOL Companion, a program that lets users access all AOL applications installed on the computer. This is not an essential Windows process and can be disabled if known to create problems. AOL Companion is a desktop tool introduced by AOL that provides quick access to AOL services through the Windows desktop. The program lets users browse the Yellow Pages, scan for weather updates, search the Internet, access maps, provides horoscopes and features chat. America Online (AOL) is an American telecommunications company that was established in 1985 by Jim Kimsey. It was originally called Quantum Computer Services and provided online services. AOL Inc. is based in New York City and develops and invests in web sites and brands. AOL distributes digital content, markets products, and offers numerous services to consumers, publishers, and advertisers.

WANMpSvc stands for Wide Area Network Miniport ATW Service

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 wanmpsvc.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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Wanmpsvc.exe file information

Windows Task Manager with wanmpsvc
Wanmpsvc.exe process in Windows Task Manager

The process known as Wan Miniport (ATW) Service belongs to software America Online or WAN Miniport (ATW) Service by America Online (

Description: Wanmpsvc.exe is not essential for Windows and will often cause problems. Wanmpsvc.exe is located in the C:\Windows folder. The file size on Windows 10/8/7/XP is 65,536 bytes. 
The program has no visible window. The wanmpsvc.exe file is not a Windows core file. The file is located in the Windows folder, but it is not a Windows core file. Therefore the technical security rating is 51% dangerous, however you should also read the user reviews.

Recommended: Identify wanmpsvc.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as wanmpsvc.exe. Therefore, you should check the wanmpsvc.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 suddenly showed up and started installing itself as a wireless connection that I cannot disconnect. Seems to happen everytime certain individuals send pictures or .doc files. I now have 3 added "dial up" connections but no dial up. I'm thinking it is spyware. Shows up in Network Connections as WAN MINIPORT (ATW) with NO PASSWORD OR ENCRYPTION REQUIRED in the properties
I read online that WAN Miniport (ATW) is freeware. I am having some kind of connection problems. I do use AOL but my pc with its Windows XP is not using AOL software to connect to the Internet. The problem with that is that I am constantly having to log onto AOL services even though I should be logged on automatically when I connect.
I'm on a laptop of which the previous owner used AOL. They have so much crap. It just bogs down your system like any adware.
It seems to be a file used by AOL and CompuServe. Knowing that AOL had bought out CompuServe and am using CompuServe now I found 2 files like kit kat posted above. One in C:\WINDOWS\ wanmpsvc and the other located C:\Program Files\compuserve7.0. It only seems to show up when online. So I take it that it maybe a file used by dial up sevices to help get or stay online.
  Jerry B  
Wan miniport disabled my Windows Mail to the extent I had to scrap it and use Thunderbird instead
I had a unknown device in System Hardware Device Manager. I uninstalled the A Wan Miniport adapter and the unknown device was removed. I upgraded from windows 98SE to Windows XP and the Unknown Device reappeared without the Wan Miniport Adapter.The Unknown Device was related to ACPI or Advanced Configuration Power Interface. I try to uninstall this component and I lost my internet connection. I did not see the Wan Miniport Adapter in Network Connections though either. I am going to try Administrative Tools Component Sevices and stop the service. I am going to see what services are dependent on it
Registry entries will not delete.
i find it odd that this file is not in an AOL folder on the computer i'm looking at and they do not use AOL be careful and look at location imo
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of wanmpsvc.exe: based on 18 votes with 9 reviews. 4 users think wanmpsvc.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 2 users suspect danger. 4 users think wanmpsvc.exe is dangerous and recommend removing it. 6 users don't grade wanmpsvc.exe ("not sure about it").

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Best practices for resolving wanmpsvc issues

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

To help you analyze the wanmpsvc.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

wanmpsvc.exe [all]