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What does the PLFSetL.exe file do?

The PLFSetL.exe process is also known as DefaultSettingEXE and is a part of sonix DefaultSettingEXE. This software is produced by sonix (www.sonix.com.tw). An obsolete or defective version of PLFSetL.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about PLFSetL.exe DefaultSettingEXE

PLFSetL.exe is not part of Windows, but it is important nonetheless. PLFSetL.exe is found in the C:\Windows directory or sometimes in a subdirectory of C:\Windows. Frequently occurring are file sizes such as 94,208 bytes (90% of all these files) or, as the case may be, 99,712 bytes.
It was developed by a so-called third party provider - and not by Microsoft. To verify its trustworthiness, Microsoft has provided it with an embedded certificate. Windows starts the process each time that the computer boots up (Registry: MACHINE\Run). This PLFSetL.exe process does not appear as a visible window, but only in Task Manager. PLFSetL.exe is capable of interpret keystrokes. For this reason, 20% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves PLFSetL.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about PLFSetL?

plfsetl.exe is part of a Chipset driver developed by Sonix. This task is responsible for a hardware piece in your system. It offers additional configuration options and support for this device (further information...)
Hugo Sørli
When I installed Acer Crystal Eye webcam software (Suyin's "Camera_Suyin_v2.0.4_Vistax86x64_XPx86x64") from the official Acer website driver support (under Driver tab), the PLFSetL.exe process was installed as auto-start in MSConfig (which I later disabled from auto-run). Webcam works perfectly without PLFSetL.exe auto-starting, and curious, PLFSetL.exe does not starts when webcam starts.

Summary: One user considers it harmless. source: file.net

How to uninstall sonix DefaultSettingEXE

To remove DefaultSettingEXE from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate sonix DefaultSettingEXE in the list of displayed applications.
  5. Click the program, and then click Uninstall.
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PLFSetL.exe DefaultSettingEXE fix

How to tell if PLFSetL.exe (DefaultSettingEXE) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of DefaultSettingEXE. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for DefaultSettingEXE or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or PLFSetL.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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