What is acsagent.exe?

The genuine acsagent.exe file is a software component of ActivClient by ActivIdentity.
Acsagent.exe is an executable file that belongs to ActivClient, a desktop authentication software that works with smart cards, readers, operating systems, networks and enterprise applications. This is not a critical Windows component and should be removed if known to cause problems. ActivClient software enables the enforcement of company guidelines and policies while accessing networks and workstations. The program features storage for multiple credentials using the public key infrastructure (PKI); one-time password (OTP) and static passwords on a single authentication device; remote access solutions; PIN management; notifications and logging. ActivIdentity is an American company based in Silicon Valley, California that develops digital identity assurance solutions including authentication and smart card services for enterprise, government and commercial establishments. The company was founded in 1987 and acquired by HID Global in 2010.

ACSAgent stands for ActivClient Service Agent

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 acsagent.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 acsagent.exe related errors

Acsagent.exe file information

The process known as ActivClient Agent belongs to software ActivClient for CAC - PKI Only or ActivClient CAC (version x64) or ActivClient (version x64 NASA DSI) by ActivIdentity (

Description: Acsagent.exe is not essential for the Windows OS and causes relatively few problems. Acsagent.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 164,904 bytes (66% of all occurrences) or 77,312 bytes. 
The application can be removed using the Control Panel's Add\Remove programs applet. The program has no visible window. The process is loaded during the Windows boot process (see Registry key: MACHINE\User Shell Folders). The file is not a Windows system file. Acsagent.exe is a Verisign signed file. The file has a digital signature. Therefore the technical security rating is 22% dangerous.

Uninstalling this variant: If you still experience problems with acsagent.exe, you can do the following:
  1) completely remove ActivClient CAC x64 or ActivClient for CAC - PKI Only (Control Panel ⇒ Uninstall a Program)
  2) go to the software publisher,, for advice.

Recommended: Identify acsagent.exe related errors

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


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Best practices for resolving acsagent issues

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

acsagent.exe [all]