How to get rid of the lsas Virus
Sometimes the lsas file may cloak a virus, e.g. BitDefender found Worm.Generic.761875, as well as Sophos found Mal/Emogen-P. If your anti-virus software does not detect a virus, try using a supplementary free Anti-Malware scanner.Other problems with lsas.exe
The lsas.exe process is also known as BI and is a part of unknown. This software is produced by ShengTai'An Electronic Commerce Development Co.. An obsolete or defective version of lsas.exe can cause problems for your computer that can range from slowness to error messages such as these:
- lsas.exe has stopped working. Windows is checking for a solution to the problem... (Windows 10, 8, 7)
- lsas.exe 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)
- lsas.exe has encountered a problem and needs to close.
- Access violation at address FFFFFFFF in module lsas.exe. Read of address 00000000.
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What you should know about lsas.exe lsas.exe
lsas.exe is not a Windows system file and is known to frequently cause computer problems. Lsas.exe is found in a subdirectory of "C:\Program Files".
Frequently occurring are file sizes such as 554,496 bytes (75% of all these files) or, as the case may be, 561,080 bytes.
The application has a visible window, and can be closed by clicking the red X button.. It does not come from Microsoft and is not part of the operating system. The file does not supply any version information or other description. This lsas.exe process is initiated as part of Windows start-up (Registry: Run).
Lsas.exe is capable of modify other Windows tasks as well as monitor other applications.
For this reason, 62% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.
Attention: If you find lsas.exe on your computer, please scan it with an anti-virus product. If your anti-virus software does not recognize it as being harmful, then please make sure that you have the latest update of the signature file, or check the file online. For this option, you may want to use Security Task Manager. Here, click on the process with the right mouse button and send the file to an online virus scanner.
How to uninstall unknown
To remove lsas.exe 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 unknown in the list of displayed applications.
- Click the program, and then click Uninstall.


How to tell if lsas.exe (lsas.exe) 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 lsas.exe. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for lsas.exe 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 lsas.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.
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