What is DfSdkS64.exe?
DfSdkS64.exe is part of mst Defrag SDK and developed by mst software GmbH, Germany according to the DfSdkS64.exe version information.
DfSdkS64.exe's description is "mst Defrag SDK Service"
DfSdkS64.exe is usually located in the 'c:\program files (x86)\ashampoo\ashampoo winoptimizer 14\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about DfSdkS64.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 DfSdkS64.exe:
| Property | Value |
|---|---|
| Product name | mst Defrag SDK |
| Company name | mst software GmbH, Germany |
| File description | mst Defrag SDK Service |
| Internal name | mstDfSDK.exe |
| Original filename | mstDfSDK.exe |
| Comments | mst Defrag SDK Service |
| Legal copyright | Copyright (C) 2005-2009, mst software GmbH. |
| Product version | 3,6,0,0 |
| File version | 3,6,0,6165 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | mst Defrag SDK |
| Company name | mst software GmbH, Germany |
| File description | mst Defrag SDK Service |
| Internal name | mstDfSDK.exe |
| Original filename | mstDfSDK.exe |
| Comments | mst Defrag SDK Service |
| Legal copyright | Copyright (C) 2005-2009, mst softwar.. |
| Product version | 3,6,0,0 |
| File version | 3,6,0,6165 |
Digital signatures [?]
DfSdkS64.exe is not signed.
VirusTotal report
None of the 51 anti-virus programs at VirusTotal detected the DfSdkS64.exe file.
Filename variants
DfSdkS64.exe may also use other filenames. The most common variants are listed below:
- dfsdks.exe
Folder name variants
DfSdkS64.exe may also be located in other folders than c:\program files (x86)\ashampoo\ashampoo winoptimizer 14\. The most common variants are listed below:
- C:\Program Files (x86)\Ashampoo\Ashampoo WinOptimizer 10\
- C:\Program Files (x86)\Ashampoo\Ashampoo WinOptimizer 2017\
- C:\Program Files (x86)\Ashampoo\Ashampoo HDD Control 3\
- c:\program files (x86)\ashampoo\ashampoo winoptimizer 11\
- c:\program files (x86)\ashampoo\ashampoo winoptimizer 12\
- C:\Program Files (x86)\Ashampoo\Ashampoo HDD Control\
- C:\Program Files (x86)\Ashampoo\Ashampoo WinOptimizer 2010 CBE\
- C:\Program Files (x86)\Ashampoo\Ashampoo WinOptimizer 2016\
- c:\program files (x86)\ashampoo\ashampoo winoptimizer 7\
- C:\Program Files (x86)\Ashampoo\Ashampoo WinOptimizer 8\
- C:\Program Files (x86)\WinOptimizer\
- C:\Users\Lucio\AppData\Roaming\Thinstall\Ashampoo WinOptimizer 8 v.8.05\%ProgramFilesDir%\Ashampoo\Ashampoo WinOptimizer 8\
Hashes [?]
| Property | Value |
|---|---|
| MD5 | d51b32ba3897f630d99713b74b40d6a2 |
| SHA256 | 5eb136a8248e6fa1316cfa273d9dc8f9c8e8ccb9ac00ae23c1337fbf5f6fdbec |
Error Messages
These are some of the error messages that can appear related to dfsdks64.exe:
dfsdks64.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
dfsdks64.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.
mst Defrag SDK Service has stopped working.
End Program - dfsdks64.exe. This program is not responding.
dfsdks64.exe is not a valid Win32 application.
dfsdks64.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.
What will you do with DfSdkS64.exe?
To help other users, please let us know what you will do with DfSdkS64.exe:
What did other users do?
The poll result listed below shows what users chose to do with DfSdkS64.exe. 100% have voted for removal. Based on votes from 9 users.
| Votes | |||
|---|---|---|---|
| Keep | 0 % | 0 | |
| Remove | 100 % | 9 |
NOTE: Please do not use this poll as the only source of input to determine what you will do with DfSdkS64.exe. Only 9 users has voted so far so it does not offer a high degree of confidence.
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.
And now some shameless self promotion ;)
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Comments
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.
completely benign program; it does not even use any CPU unless "Proactive Defrag" is chosen as an option in the user interface. I first encountered this neat utility from the AShampoo WinOptimizer product on which it is bundled. Made by a reputable German company: you should keep it; and if you want effective, very good background defragmentation that uses very little resources, then choose the "Proactive Defrag" option.
# 10 Jan 2015, 1:10
Randy Bell writes