What does the DfSdkS.exe file do?
The DfSdkS.exe process is also known as mst Defrag SDK Service and is a part of Ashampoo WinOptimizer (Version 8 v., 11 v., 9 v., 2013 v.) or, as the case may be, Ashampoo HDD Control (Version 2 v.). This software is produced by mst software GmbH, Germany (www.mstsoftware.com). An obsolete or defective version of DfSdkS.exe can cause problems for your computer that can range from slowness to error messages such as these:
- mst Defrag SDK service has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- mst Defrag SDK service has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available. (Windows 10, 8, 7)
- DfSdkS.exe has encountered a problem and needs to close. (Windows XP)
- Access violation at address FFFFFFFF in module DfSdkS.exe. Read of address 00000000.
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What you should know about DfSdkS.exe mst Defrag SDK service
DfSdkS.exe is not part of Windows, but it is important nonetheless. The file DfSdkS.exe is found in a subdirectory of "C:\Program Files".
The file size is 406,016 bytes.
This process does not have a visible window, and does not appear on the taskbar. The DfSdkS file does not come from Microsoft and is not part of the operating system. DfSdkS.exe is capable of transmit information from computer to the Internet as well as monitor other applications. For this reason, 42% 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 DfSdkS.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 DfSdkS?
The file spreads very slowly and does not often make an appearance. Therefore, feedback from other users is not yet available.
Summary: source: file.net
How to uninstall Ashampoo WinOptimizer or Ashampoo HDD Control
To remove mst Defrag SDK service from your computer, please follow the manual instructions below or use an automatic uninstaller product.
- Click the Windows Start Button. You find it in the lower left corner of the taskbar.
- Type the word uninstall.
- Click Add or remove programs.
- Now locate Ashampoo WinOptimizer or Ashampoo HDD Control in the list of displayed applications.
- Click the program, and then click Uninstall.
How to tell if DfSdkS.exe (mst Defrag SDK service) 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 mst Defrag SDK service. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for mst Defrag SDK service 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 DfSdkS.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.