What is actldr.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 actldr.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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Actldr.exe file information

Windows Task Manager with actldr
Actldr.exe process in Windows Task Manager

The process known as ACTLDR.EXE belongs to software ACT! 4.0 for Windows by unknown.

Description: Actldr.exe is not essential for the Windows OS and causes relatively few problems. The actldr.exe file is located in a subfolder of C:\. The file size on Windows 10/8/7/XP is 35,328 bytes. 
The file is a file with no information about its developer. The program is not visible. The program starts upon Windows startup (see Registry key: User Shell Folders, MACHINE\User Shell Folders). The actldr.exe file is not a Windows system file. Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.

Recommended: Identify actldr.exe related errors

If actldr.exe is located in a subfolder of "C:\Program Files", the security rating is 64% dangerous. The file size is 34,816 bytes. There is no information about the author of the file. The program is not visible. The application starts when Windows starts (see Registry key: User Shell Folders, MACHINE\User Shell Folders). The file is not a Windows system file.

Uninstalling this variant: If problems with actldr.exe occur, you can also uninstall ACT! 4.0 for Windows software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Important: Some malware camouflages itself as actldr.exe. Therefore, you should check the actldr.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

It is part of very old ACT software, nothing else known
  John Sellers  

One user is not sure about it.

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Best practices for resolving actldr issues

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

actldr.exe [all]