What is DfSDKBt.exe?
DfSDKBt.exe is part of mst Defrag SDK and developed by mst software GmbH, Germany according to the DfSDKBt.exe version information.
DfSDKBt.exe's description is "mst Defrag SDK Boot"
DfSDKBt.exe is digitally signed by ashampoo GmbH & Co. KG.
DfSDKBt.exe is usually located in the 'C:\WINDOWS\system32\' folder.
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 DfSDKBt.exe:
| Property | Value |
|---|---|
| Product name | mst Defrag SDK |
| Company name | mst software GmbH, Germany |
| File description | mst Defrag SDK Boot |
| Internal name | BtDfSDK.exe |
| Original filename | BtDfSDK.exe |
| Comments | mst Defrag SDK Boot Engine |
| Legal copyright | Copyright (C) 2005-2008, mst software GmbH. |
| Product version | 3,0,0,0 |
| File version | 3,0,0,5060 |
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 Boot |
| Internal name | BtDfSDK.exe |
| Original filename | BtDfSDK.exe |
| Comments | mst Defrag SDK Boot Engine |
| Legal copyright | Copyright (C) 2005-2008, mst softwar.. |
| Product version | 3,0,0,0 |
| File version | 3,0,0,5060 |
Digital signatures [?]
DfSDKBt.exe has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | ashampoo GmbH & Co. KG |
| Certificate issuer name | VeriSign Class 3 Code Signing 2004 CA |
| Certificate serial number | 7d08bfed465d41bd57965cb93a21e092 |
Folder name variants
DfSDKBt.exe may also be located in other folders than C:\WINDOWS\system32\. The most common variants are listed below:
- D:\WINDOWS\system32\
Hashes [?]
| Property | Value |
|---|---|
| MD5 | a43182c212ad802b5d48ad3a3c89143d |
| SHA256 | ec9093a1e33dabf29094b052c7639e3864a62b4a3c36c99b6deaa5c23e1129ba |
Error Messages
These are some of the error messages that can appear related to dfsdkbt.exe:
dfsdkbt.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
dfsdkbt.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 Boot has stopped working.
End Program - dfsdkbt.exe. This program is not responding.
dfsdkbt.exe is not a valid Win32 application.
dfsdkbt.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.
What will you do with DfSDKBt.exe?
To help other users, please let us know what you will do with DfSDKBt.exe:
What did other users do?
The poll result listed below shows what users chose to do with DfSDKBt.exe. 59% have voted for removal. Based on votes from 37 users.
NOTE: Please do not use this poll as the only source of input to determine what you will do with DfSDKBt.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.
And now some shameless self promotion ;)
Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.
If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.
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.
Hi Roger,
DfSDKBt.exe is from Winoptimiser 6
I had no problems with it until I installed Iolo System Mechanic. I like both programs for some, but not all, of their respective functions.
For me Sytem Mechanic won't De-Frag my hard drive properly but Winoptimiser does. Neither will these do a proper Boot time De-Frag, although Winoptimiser did before System Mechanic was installed. My problem is I cannot get either program to De-Frag system files at start up. Everytime I access these programs they tell me they will De-Frag at start up but never do. I can live with it but thought I would share the mystery. I'm running Vista and Service pack 2 with all the latest Windows Updates.
Regards,
Pat.
# 29 Apr 2012, 8:25
/Pat/ writes