What is cjpcsc.exe?

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 cjpcsc.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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Cjpcsc.exe file information

Windows Task Manager with cjpcsc
Cjpcsc.exe process in Windows Task Manager

The process known as cyberJack PC/SC COM Service or cyberJack PC/SC Service belongs to software REINER SCT cyberJack Base Components or cyberJack Base Components or cyberJack PC/SC Service or Security Update for Microsoft .NET by REINER SCT (

Description: Cjpcsc.exe is not essential for the Windows OS and causes relatively few problems. The file cjpcsc.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 652,592 bytes (24% of all occurrences), 654,640 bytes and 10 more variants. 
The program has no visible window. The cjpcsc.exe file is not a Windows system file. The cjpcsc.exe file is certified by a trustworthy company. The file is a Verisign signed file. Cjpcsc.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 35% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can uninstall Security Update for Microsoft .NET, or ask Support team for help. Go to Security Update for Microsoft .NET in the Windows Control Panel (Software or Programs section) to uninstall it, or go to for Customer Support.

Recommended: Identify cjpcsc.exe related errors

If cjpcsc.exe is located in a subfolder of C:\Windows, the security rating is 40% dangerous. The file size is 514,128 bytes (45% of all occurrences), 569,344 bytes and 9 more variants. The program is not visible. The file is not a Windows core file. It is digitally signed. The cjpcsc.exe file is a Verisign signed file. It can change the behavior of other programs or manipulate other programs. Cjpcsc.exe is able to record keyboard and mouse inputs and monitor applications.

Important: Some malware disguises itself as cjpcsc.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the cjpcsc.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

Driver for cardreader Reiner SCT
Gehört zu Chipkartenleser CyberJack
  grauwolf   (further information)
dient der Datenübertragung des Kartenleser von REINER SCT
    (further information)
Gehört zum Reiner SCT Chipkarten Leser.
    (further information)

Summary: Average user rating of cjpcsc.exe: based on 5 votes with 4 user comments. 4 users think cjpcsc.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving cjpcsc issues

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

cjpcsc.exe [all]