amit (articled assistant) (171 Points)
22 March 2012I have read many articles on this site relating to computer which helped in tuning the pc pls friends i want to know one thing that what is ISASS.exe file it is everytime shown under processes in task manager i have heard that due to this files presence internet speed is affected pls tell is that true.
I wnat to know what is this file, is it dangerous, and how to remove it from the computer
CA. Arijit Mukherjee
(International Accounting - Citrix R&D India)
(276 Points)
Replied 22 March 2012
FIRSTLY, its important to know, whether the thing, in your task manager is LSASS or ISASS.
A Microsoft Windows file stored in the c:\windows\system32 or c:\winnt\system32 directory that is short for Local Security Authority Subsystem Service and has the file descripttion: LSA shell. This file is responsible for how Microsoft Windows handles security and security related policies, authority domain authentication, and Active Directory management on your computer.
Since the font used by task mgr makes Lowercase l and uppercase I the same, you can't quite tell them apart. Isass is a type of gateway worm, it first gets on your system, and disables your firewall, then takes a hold of LSASS' computer responsabilities, and shuts down your firewalls and other security features.
The lsass.exe is a critical system process that cannot be removed from the Task Manager without causing issues with Windows. When attempting to End Process the lsass.exe you will receive the Unable to Terminate Process window with the error This is a critical system process. Task Manager cannot end this process. It is normal to receive this error.
It generally does not hamper internet speed..Unless your are experiencing extreme slow performance, dnt bother about it.
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