What is twunk_16.exe?

twunk_16.exe is part of Twain Thunker and developed by Twain Working Group according to the twunk_16.exe version information.

twunk_16.exe's description is "Twain_32.dll Client's 16-Bit Thunking Server"

twunk_16.exe is usually located in the 'C:\WINDOWS\system32\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about twunk_16.exe.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on twunk_16.exe:

Product nameTwain Thunker
Company nameTwain Working Group
File descriptionTwain_32.dll Client's 16-Bit Thunking Server
Internal nameTwunk_16
Original filenameTwunk_16.exe
Product version1,6,0,1
File version1,6,0,1

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameTwain Thunker
Company nameTwain Working Group
File descriptionTwain_32.dll Client's 16-Bit Thunkin..
Internal nameTwunk_16
Original filenameTwunk_16.exe
Product version1,6,0,1
File version1,6,0,1

Digital signatures [?]

twunk_16.exe is not signed.

VirusTotal report

None of the 52 anti-virus programs at VirusTotal detected the twunk_16.exe file.

None of the 52 anti-virus programs detected the twunk_16.exe file.

Folder name variants

twunk_16.exe may also be located in other folders than C:\WINDOWS\system32\. The most common variants are listed below:

Hashes [?]


Error Messages

These are some of the error messages that can appear related to twunk_16.exe:

twunk_16.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

twunk_16.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

Twain_32.dll Client's 16-Bit Thunking Server has stopped working.

End Program - twunk_16.exe. This program is not responding.

twunk_16.exe is not a valid Win32 application.

twunk_16.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with twunk_16.exe?

To help other users, please let us know what you will do with twunk_16.exe:

What did other users do?

The poll result listed below shows what users chose to do with twunk_16.exe. 30% have voted for removal. Based on votes from 334 users.

User vote results: There were 101 votes to remove and 233 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with twunk_16.exe.

Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page

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Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

Brian Lawrence writes

3 thumbs


This is a legitimate file. Don't remember which program
it is for right now but it has to do with the printer.

All The Best

# 20 Aug 2010, 19:51

Lubos writes

2 thumbs

The TWAIN Working Group DOES provide some software that allows manufacturers of scanners and digital cameras to write drivers and for software developers to write applications that work together. It is for accessing your parallel port. Don't touch em.
Quick hint. Don't delete system files just cause you find them suspicious.

There is no contradiction in any thing. It's system files 16-bit and 32-bit

TWUNK_16.EXE and TWUNK_32.EXE are TWAIN Thunker modules.

16-bit TWAIN.DLL and the 32-bit TWAIN_32.DLL. are TWAIN Data Source Manager modules

What is the exact role of the 16-bit TWUNK_16.EXE for 32-bit Windows TWAIN scanning? Is it possible to disable it?

Answer: Under MS Windows there are two TWAIN Data Source Manager modules, the 16-bit TWAIN.DLL and the 32-bit TWAIN_32.DLL. Each one when loaded will attempt to start the other one through one of the TWAIN Thunker modules (TWUNK_16.EXE or TWUNK_32.EXE) so it could enumerate all the TWAIN Data Sources installed on the system, both 16 and 32-bit. Without TWUNK_16.EXE TWAIN_32.DLL (and the application that loaded TWAIN_32.DLL) would be unable to see any 16-bit Data Sources. And without TWUNK_32.EXE TWAIN.DLL would be not able to see 32-bit Data Sources.

# 29 Nov 2010, 5:51

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