You cannot close it, if it's the real Microsoft file.
What makes you think you need to close Smss.exe?
Smss.exe - You cannot end this process from Task Manager.
* This is the session manager subsystem, which is responsible for starting
the user session. This process is initiated by the system thread and is
responsible for various activities, including launching the Winlogon and
Win32 (Csrss.exe) processes and setting system variables. After it has
launched these processes, it waits for either Winlogon or Csrss to end. If
this happens "normally," the system shuts down; if it happens unexpectedly,
Smss.exe causes the system to stop responding (hang).
http://support.microsoft.com/kb/263201
Note: smss.exe could also be a process which is registered as a trojan.
Viruses with same name, smss.exe:
W32.Dalbug.Worm
Adware.DreamAd
W32.Resdoc
Adware.Advision
Backdoor.IRC.Flood.F
Backdoor.IRC.Aladinz.O
Update your antivirus software and run a full system scan.
Update whatever anti-spyware applications that you have and run a full
system scan with each one.
You might want to start in Safe Mode to run your antivirus and anti-spyware
software.
Running a full system antivirus scan or anti-spyware scan in Safe Mode can
be a good idea. Some viruses and other malware like to conceal themselves
in areas Windows protects while using them. Safe mode will prevent those
applications access and therefore unprotect the viruses or other malware
allowing for easier removal.
How to start Windows in Safe Mode Windows XP
http://www.bleepingcomputer.com/forums/index.php?showtutorial=61#winxo
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In
Thanks for your help, I get this message when I try and reinstall Windows Servics Pack 2.