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 accrdsub.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.
The process known as ActivIdentity card event handler belongs to software ActivClient (version 6.1 x86, x86) or ActivClient for CAC - PKI Only or ActivClient CAC (version 6.1 x86, 6.1 AFR) or ActivClient Mini or SAMSUNG USB Driver for Mobile by ActivIdentity (www.actividentity.com).
Description: Accrdsub.exe is not essential for the Windows OS and causes relatively few problems. The file accrdsub.exe is located in a subfolder of "C:\Program Files".
Known file sizes on Windows 8/7/XP are 293,168 bytes (47% of all occurrences), 298,536 bytes and 6 more variants.
The program is not visible. The process starts when Windows starts (see Registry key: MACHINE\Run). It is not a Windows core file. Accrdsub.exe is a Verisign signed file. The file has a digital signature. The software can be uninstalled in the Control Panel. Therefore the technical security rating is 28% dangerous; however you should also read the user reviews.
If any problems with ActivClient 6.1 x86 or ActivClient x86 occur, you may also want to uninstall it software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 8/7/Vista) or turn to the software company, Actividentity, for advice.
Recommended: Identify accrdsub.exe related errors
Important: Some malware camouflages itself as accrdsub.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the accrdsub.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.
A clean and tidy computer is the key requirement for avoiding problems with accrdsub. 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 doing a repair of your installation, or in the case of Windows 8, 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 accrdsub.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.