What is systools.dll?

Systools.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if systools.dll is a Windows system file or if it belongs to an application that you can trust.

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Systools.dll file information

The process known as SYSTOOLS or sysTools Dynamic Link Library belongs to software SYSTOOLS or sysTools Dynamic Link Library by Panda Software ( or ( or Panda Security, S.L (

Description: Systools.dll is not essential for the Windows OS and causes relatively few problems. Systools.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 101,888 bytes (53% of all occurrences), 107,568 bytes, 102,400 bytes, 214,264 bytes or 99,072 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. The service has no detailed description. It can change the behavior of other programs or manipulate other programs. It is not a Windows system file. Systools.dll is able to manipulate other programs. Therefore the technical security rating is 58% dangerous; however you should also read the user reviews.

Recommended: Identify systools.dll related errors

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

one part of the Panda antivirus
is virus
  nitsan   (further information)

Rating chart

Summary: Average user rating of systools.dll: based on 14 votes with 2 user comments. 11 users think systools.dll is essential for Windows or an installed application. One user suspects danger. 2 users think systools.dll is dangerous and recommend removing it.

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Best practices for resolving systools issues

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

systools.dll [all]