General discussion

Locked

lsass.exe high cpu usage

By pagogrp ·
Machine running XP Pro - all cuurent patches & service packs installed - every 20-30 seconds hits 100% CPU usage as result of Lsass.exe, loogui.exe & logon.scr consuming all available CPU resources. The machine has been scanned with BitDefender & Trend Micro Housecall - no viruses detected.

Anyone with an idea as to what might be causing the high CPU usage

This conversation is currently closed to new comments.

10 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

by raunak2811 In reply to lsass.exe high cpu usage

You may have to edit the registry of your computer. Try this . Open up regedit
2. Goto HKEY_CLASSES_ROOT\\SystemFileAssociations\\.avi\\shellex\\PropertyHandler
3. Delete the "Default" value which should be "{87D62D94-71B3-4b9a-9489-5FE6850DC73E}". BEFOR MAKING ANY CHANGES IN THE REGISTRY ALWAYS CREATE A RESTORE POINT. Let me know if this helps. raunak2811

Collapse -

by pagogrp In reply to

Poster rated this answer.
Thanks for the answer. I made the suggested registry change & restarted the machine but Lsass.exe continues with high CPU usage

Collapse -

by HAL 9000 Moderator In reply to lsass.exe high cpu usage

Download the following install and update than and then reboot into Safe Mode and run both AV and Male Ware Scans. You have a Male Ware infection

http://tinyurl.com/du0h

http://tinyurl.com/yrwy2

Collapse -

by pagogrp In reply to

Poster rated this answer.
Thanks for the answer but I had previously run two anti-virus products that offered spyware checking. I have run Counterspy on the machine today with no spyware detected

Collapse -

by pagogrp In reply to lsass.exe high cpu usage

Point value changed by question poster.

Collapse -

by HAL 9000 Moderator In reply to lsass.exe high cpu usage

See the following URLs for the answer to your problem.

http://tinyurl.com/3mvvx

http://tinyurl.com/bd65d

http://tinyurl.com/jelpz

Collapse -

by pagogrp In reply to

Poster rated this answer.
Hal 9000 I thank you for your input - As a result of your insistence that it was some sort of infection, I ran PestPatrol - again there was nothing reported!! I now know what the issue was & it was definitely NOT any sort of infection.

Collapse -

by shelli_2005 In reply to lsass.exe high cpu usage

Did you really mean "loogui.exe " because I have never heard of that.
All profiles have the same problem?
A good place to start is here: http://support.microsoft.com/default.aspx?scid=kb;en-us;198038
Get filemon that will help you trace the processes.Silly question but Im betting its just fine in safe mode? If so standard troubleshooting techniques apply..kill all the non essential startup progs and services, run sfc /scannow, hijackthis couldnt hurt as it generates a good startup programs list.

Collapse -

by pagogrp In reply to

Poster rated this answer.
Thanks for the answser - I finally tried something that I had been trying to do for some time but since I had not been on-site, windows would not let me carry out the reconfiguration remotely. The answer was that there were some 24 user accounts on the machine & Fast switching was turned on. After turning of Fast switching, the machine returned to normal. Interestingly, a mail server package that would not operate properly as a service now runs as a service without a problem. It was logonui that led me to trying this - it only runs when fast switching is activated.

Collapse -

by pagogrp In reply to lsass.exe high cpu usage

This question was closed by the author

Back to Windows Forum
10 total posts (Page 1 of 1)  

Related Discussions

Related Forums