What is acachsrv.exe?

The genuine acachsrv.exe file is a software component of ActivCard by ActivIdentity.
Acachsrv.exe is an executable file that belongs to ActivCard, USB card reader that reads Common Access Cards (CaC), as well numerous types of smart cards. This is not a critical Windows component and should be removed if known to cause problems. ActivCard is an approved CaC reader that is used to read Department of Defense Common Access Cards. It is designed for the Microsoft Windows operating system. 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.

ACACHSrv stands for ActivCard Authentication Client Handler Service Gold Component

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 acachsrv.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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Acachsrv.exe file information

The process known as ActivCard Gold Component or acachsrv belongs to software ActivCard Gold for CAC - PKI or ActivClient for CAC - PKI Only or ActivClient Mini by ActivCard or ActivIdentity (

Description: Acachsrv.exe is not essential for the Windows OS and causes relatively few problems. The acachsrv.exe file is located in a subfolder of "C:\Program Files\Common Files". The file size on Windows 10/8/7/XP is 135,168 bytes. 
The program is not visible. The program can be uninstalled in the Control Panel. The acachsrv.exe file is not a Windows system file. Acachsrv.exe is able to hide itself. Therefore the technical security rating is 26% dangerous.

Uninstalling this variant: If you run into problems with acachsrv.exe, you may want to uninstall the program using the Control Panel ⇒ Uninstall a ProgramActivCard Gold for CAC - PKI.

Recommended: Identify acachsrv.exe related errors

If acachsrv.exe is located in a subfolder of "C:\Program Files", the security rating is 34% dangerous. The file size is 74,240 bytes (50% of all occurrences) or 81,920 bytes. The program has no visible window. Acachsrv.exe is not a Windows core file. Acachsrv.exe is able to hide itself.

Uninstalling this variant: If you run into problems with acachsrv.exe, you may want to uninstall the program using the Control Panel ⇒ Uninstall a ProgramActivClient Mini or ActivClient for CAC - PKI Only.

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

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

acachsrv.exe [all]