What is windll32.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 windll32.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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Windll32.exe file information

There are no author's data about the windll32.exe process.

Description: Windll32.exe is not essential for Windows and will often cause problems. The file windll32.exe is located in the C:\Windows\System32 folder. The file size on Windows 10/8/7/XP is 46,080 bytes. 
The file is a file with no information about its developer. The file is not a Windows system file. The program has a visible window. The application starts when Windows starts (see Registry key: Run, MACHINE\Run). Therefore the technical security rating is 36% dangerous; however you should also read the user reviews.

Recommended: Identify windll32.exe related errors

If windll32.exe is located in a subfolder of C:\Windows\System32, the security rating is 36% dangerous. The file size is 1,369,600 bytes. The program has a visible window. The process has no file description. The program starts when Windows starts (see Registry key: Run, MACHINE\Run). It is not a Windows core file. Windll32.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs.

If windll32.exe is located in a subfolder of the user's profile folder, the security rating is 56% dangerous. The file size is 1,024 bytes. The program has a visible window. There is no information about the author of the file. The program starts upon Windows startup (see Registry key: Run, MACHINE\Run). The file is not a Windows system file. windll32.exe appears to be a compressed file.

External information from Paul Collins:
There are different files with the same name:

Important: Some malware camouflages itself as windll32.exe. Therefore, you should check the windll32.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's a worm.
before it appears it creates a file called "testfile" it appears on the maindrive: c:/testfile or d:/testfile or e:/testfile
who users it

Summary: Average user rating of windll32.exe: based on 4 votes with 3 user comments. 2 users think windll32.exe is essential for Windows or an installed application. One user suspects danger. One user thinks windll32.exe is dangerous and recommends removing it. 2 users don't grade windll32.exe ("not sure about it").

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Best practices for resolving windll32 issues

A clean and tidy computer is the key requirement for avoiding problems with windll32. 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 windll32.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

windll32.exe [all]