The genuine wanatw4.sys file is a software component of WAN Miniport (ATW) by AOL.
Wanatw4.sys is a system driver that belongs to AOL Desktop, an integration of a web browser, a media player and an instant messenger client. A driver is a software program that adds functionality to peripheral devices. It can even add support for a specialized device in the computer. This is not an essential Windows process and can be disabled if known to create problems. AOL Desktop is a set of software programs developed for users of AOL products. The suite offers AOL Mail, a mail application; Triton, an instant messaging client; and AOL Explorer, a browser based on Microsoft's Internet Explorer. The program also includes a universal address book including email and Internet telephony, as well as numerous security features. 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.
WanATW4 stands for Wide area network Miniport (America Online Telecom Wireless Connection) (version 4)
Wanatw4.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 wanatw4.sys is a Windows system file or if it belongs to an application that you can trust.
Description: Wanatw4.sys is not essential for Windows and will often cause problems. Wanatw4.sys is located in the C:\Windows\System32\drivers folder.
Known file sizes on Windows 10/8/7/XP are 33,588 bytes (88% of all occurrences) or 28,396 bytes.
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. Wanatw4.sys is not a Windows system file. It is a trustworthy file from Microsoft. wanatw4.sys appears to be a compressed file. Therefore the technical security rating is 16% dangerous; however you should also read the user reviews.
Recommended: Identify wanatw4.sys related errors
Important: Some malware camouflages itself as wanatw4.sys. Therefore, you should check the wanatw4.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.
A clean and tidy computer is the key requirement for avoiding problems with wanatw4. 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 wanatw4.sys 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.