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What does the smss.exe file do?

The smss.exe process is also known as Windows NT Session Manager or, as the case may be, Windows Session Manager and is a part of Microsoft Windows Operating System or, as the case may be, Loader. This software is produced by Microsoft (www.microsoft.com) or, as the case may be, Black Internet. An obsolete or defective version of smss.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about smss.exe Windows NT Session Manager

smss.exe is a Windows system file. The file smss.exe is found in the C:\Windows\System32 directory. Frequently occurring are file sizes such as 50,688 bytes (81% of all these files), 64,000 bytes as well as 8 other variants.
The smss file is part of the operating system. The program executes in the background, and can only be terminated using Windows Task Manager. To verify its trustworthiness, Microsoft has provided it with an embedded certificate. For this reason, 5% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

smss.exe is a system file used by Microsoft Windows, and appears in Windows Task Manager as a process named "Windows NT Session Manager." However, some viruses or Trojans use the same file name in order to remain undetected (e.g. BKDR_SDBOT.TK or, as the case may be, TROJ_GEN.R1CC6KS (recognized by TrendMicro), as well as Trojan-Spy.Win32.Agent.baow or, as the case may be, Backdoor.Win32.SdBot.pqv (recognized by Kaspersky)).
To be really safe, you should scan your computer with two different anti-virus engines. You can use a free Anti-Malware scanner for this purpose.

Objectionable files with the same file name have the following characteristics:

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 smss.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 smss?

Windows Session Manager Subsystem
Alex
not dangerous, smvss.exe is used by various worms, so be careful to note the difference
rich
Came up dangerous for "Dr web" with a occasional message that takes a few clicks to, rid off.I have located the file, scan it, and "no threats detected" (further information...)
Adam

Summary: 90 users judge smss.exe to be an essential file that should not be touched. 13 users consider it harmless. However, 32 users consider this to be a suspicious process and would like to get rid of it. For this reason, 94 users have already deleted smss.exe. source: file.net

How to uninstall the program or Loader

smss.exe  Windows NT Session Manager fix

To remove Windows NT Session Manager from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for the program or Loader in the list of available programs.
  5. Click Uninstall.

How to tell if smss.exe (Windows NT Session Manager) 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 NT Session Manager. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Windows NT Session Manager 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 smss.exe is causing problems for you, a good Registry Cleaner 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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