What is UpdClient.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 UpdClient.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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UpdClient.exe file information

The process known as ZoneAlarm Updating Client belongs to software ZoneAlarm or ZoneAlarm Security Suite by Zone Labs (

Description: UpdClient.exe is not essential for the Windows OS and causes relatively few problems. The UpdClient.exe file is located in a subfolder of C:\Windows\System32. Known file sizes on Windows 10/8/7/XP are 144,936 bytes (66% of all occurrences) or 149,032 bytes. 
You can uninstall this program in the Control Panel. The program has no visible window. It is a Verisign signed file. The file is digitally signed. It is not a Windows system file. The software listens for or sends data on open ports to a LAN or the Internet. Therefore the technical security rating is 22% dangerous.

Uninstalling this variant: If you have any problems with UpdClient.exe, you can completely remove ZoneAlarm Security Suite or ZoneAlarm (Control Panel ⇒ Uninstall a Program).

Recommended: Identify UpdClient.exe related errors

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

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

UpdClient.exe [all]