What is the sfc_os.dll component needed for?Simply stated, a DLL file is an unnamed executable file. It cannot be directly invoked, but it can be called by any executable Windows program.
The sfc_os.dll process is also known as Windows File Protection and is a part of Microsoft Windows Operating System. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of sfc_os.dll can cause problems for your computer that can range from slowness to error messages such as these:
- Windows File Protection has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- Windows File Protection 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)
- sfc_os.dll has encountered a problem and needs to close. (Windows XP)
- Access violation at address FFFFFFFF in module sfc_os.dll. Read of address 00000000.
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What you should know about sfc_os.dll Windows File Protection
sfc_os.dll is not a Windows system file and is known to frequently cause computer problems. Sfc_os.dll is found in the C:\Windows\System32 directory.
Frequently occurring are file sizes such as 40,960 bytes (84% of all these files), 41,984 bytes or, as the case may be, 164,864 bytes.
This so-called dynamic link library (DLL) contains all the functions that have been transferred to a separate file. These transferred functions are available not only to this particular program, but can also be used by other applications. This sfc_os program does not appear as a visible window, but only in Task Manager. The service has no characteristics or description of its own. This is unusual. This file does not come from Microsoft and is not part of the operating system. The file also can also affect other applications by changing their properties. Such manipulation can cause an application to do things other than what it is intended to do. It contains Microsoft's digital signature. This confirms its authenticity. For this reason, 45% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
A sfc_os.dll file has a 66% certainty of being dangerous if it is found in a subdirectory of C:\Windows. In this case, the file size is usually 133,120 bytes. The file also can also affect other applications by changing their properties. Such manipulation can cause an application to do things other than what it is intended to do. The program executes in the background, and can only be terminated using Windows Task Manager. The service has no characteristics or description of its own. This is unusual. The file was developed by a so-called third party provider - and not by Microsoft.
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 sfc_os.dll. 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 sfc_os?
|fc.dll is a file that contains functions used to monitor system files for validity. It belongs to the Microsoft Windows environment. sfc_os.dll should not be disabled, required for essential applications to work properly. |
Summary: One user judges sfc_os.dll to be an essential file that should not be touched. For this reason, 2 users have already deleted sfc_os.dll. source: file.net
How to uninstall the program
To remove Windows File Protection 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 the program in the list of displayed applications.
- Click the program, and then click Uninstall.
How to tell if sfc_os.dll (Windows File Protection) 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 Windows File Protection. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Windows File Protection 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 sfc_os.dll 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.
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