What is twunk_32.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 twunk_32.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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Twunk_32.exe file information

Windows Task Manager with twunk_32
Twunk_32.exe process in Windows Task Manager

The process known as Twain.dll Client's (version 32-Bit Thunking Server) belongs to software Twain Thunker or by Twain Working Group (

Description: Twunk_32.exe is an important part of Windows, but often causes problems. Twunk_32.exe is located in the C:\Windows folder. Known file sizes on Windows 8/7/XP are 31,232 bytes (66% of all occurrences) or 25,600 bytes. 
The twunk_32.exe file is a Windows core system file. The twunk_32.exe file is a trustworthy file from Microsoft. The program has no visible window. Therefore the technical security rating is 4% dangerous, however you should also read the user reviews.
If you encounter difficulties with twunk_32.exe, you may also uninstall the associated program (Start > Control Panel > Add/Remove programs >

Recommended: Identify twunk_32.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as twunk_32.exe, for example Possible_Mlwr-13 (detected by TrendMicro), and Backdoor:Win32/Bandok (detected by Microsoft). Therefore, you should check the twunk_32.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

Twunk 32 keeps your OS working dont touch it
  Luke Patrick Bennett  
twunk_32.exe slows os speed by taking up +96% of CPU usage
It spawned itself 212 times in the task manager before I could get File ASSASSIN to kill and delet it
Malwarebytes will NOT find twunk_32 virus issues.
Twunk_32 is a 16bit to 32bit on the fly conversion tool for windows. Recent malware programs use this to run trojan scripts. If you have high system usage by twunk_32.exe I recommend taking ownership of the file and renaming it to twunk_32.old.exe. Then see if any programs are affected by it's loss. It is not essential to windows function but other programs may use it.

Rating chart

Summary: Average user rating of twunk_32.exe: based on 9 votes with 6 user comments. 3 users think twunk_32.exe is essential for Windows or an installed application. 2 users think it's neither essential nor dangerous. 2 users suspect danger. 2 users think twunk_32.exe is dangerous and recommend removing it.

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Best practices for resolving twunk_32 issues

A clean and tidy computer is the key requirement for avoiding problems with twunk_32. 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 doing a repair of your installation, or in the case of Windows 8, 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 twunk_32.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

twunk_32.exe [all]