What is acsd.exe?

The genuine acsd.exe file is a software component of AOL Desktop by AOL.
Acsd.exe is an executable file that belongs to the AOL Desktop, an integration of a web browser, a media player and an instant messenger client. 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.

ACSD stands for AOL Connectivity Service Desktop client

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 acsd.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.

Click to Run a Free Scan for acsd.exe related errors

Acsd.exe file information

Windows Task Manager with acsd
Acsd.exe process in Windows Task Manager

The process known as AOL Connectivity Service belongs to software AOL Connectivity Service or AOL Uninstaller or America Online or Outerinfo by America Online (

Description: Acsd.exe is not essential for the Windows OS and causes relatively few problems. Acsd.exe is located in a subfolder of "C:\Program Files\Common Files"—typically C:\Program Files\Common Files\AOL\ACS\. Known file sizes on Windows 10/8/7/XP are 1,434,848 bytes (42% of all occurrences), 1,376,360 bytes, 1,392,744 bytes, 1,388,648 bytes or 1,409,129 bytes. 
The program is not visible. The file is not a Windows system file. Acsd.exe is able to connect to the Internet, hide itself and monitor applications. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you are having problems with acsd.exe, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramAOL Uninstaller or America Online.

Recommended: Identify acsd.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as acsd.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the acsd.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 is connectivity file
Not a critical component unless you use AOL services can be deleted safely.

Summary: Average user rating of acsd.exe: based on 2 votes with 2 user comments. One user thinks acsd.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. One user is not sure about it.

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Best practices for resolving acsd issues

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

acsd.exe [all]