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isass.exe consuming max(80%) cpu usage on windows server 2003

Hi Team,

Our one of the production server is having high cpu usage due to isass.exe.Only isass is consuming 80% of cpu.Cna you please advise o how to reduce it without doing server reboot?

Rahul Patil
Rahul Patil
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1 Solution
Davis McCarnOwnerCommented:
Most of the time that the Local Security Authority Subsystem Service (LSASS) uses large CPU percentages, you're infected!
I don't know if you'll be able to avoid a reboot; but, you need to run RogueKiller ( http://www.majorgeeks.com/RogueKiller_d6983.html ) and TDSSKiller ( http://support.kaspersky.com/2663 )  Neither has generally caused a problem, nor do they take action without you telling them to; but, on very rare occasions, I have had them lock up a system.
Rahul PatilAuthor Commented:
Hi Davies,

In my case it doesn't look like problem with virus/infection.to be more precise beliw is more info:

The server is a citrix server
The lssas.exe is pointing to microsoft root certificate while checking through process monitor.
I think one of hosted application i using lsaas for authentication

Also there is no any account which is trying repetedely for authntication like service account.

can you please advise?
Rahul PatilAuthor Commented:

Resolved myself using microsoft fix:

Rahul PatilAuthor Commented:
Got the fix from Microsoft .It's a common problem with win2003 servers

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