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Re-occurring lsass.exe errors


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#1
Irishredlr

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Ok here is my frustrating story...
A few weeks ago I went to turn on my pc and ended up receiving this error message:
lsass.exe - System error
Indicates a revision number not known by the service. It may be a more recent revision then the service is aware of.

And my pc was stuck in a continual reboot cycle.
I ended up reinstalling XP. Then I was running, Ad-aware SE, McAfee, and Sygate personal firewall, as well as faithfully using windows updates. I also ran some online scans, everything appeared clean.

Now yesterday, I got to turn on my pc and receive this error message:
lsass.exe - System error
When trying to update a password this return status indicates that the value provided as the current password is not correct.

And again caught in a reboot cycle.
I have reinstalled XP again.
When I turned on my pc this morning I received this error message:
Windows File – Protection: Files that are required to run windows properly have been replaced by unrecognized versions to maintain system stability windows must restore original versions of these files.

I am totally confused and frustrated! I am in the process of setting back up all the "safety precautions" and reloading all of the windows updates.
Was/is this the sasser worm? And if so does anyone know how I can be sure it is gone? Or is it a different problem?
Any help or advice would be gratefully appreciated!
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#2
Retired Tech

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Open the CD ROM drive then put the XP CD in the tray, click start, run, type sfc /scannow then press enter and close the CD ROM drive

Windows File Protection will run and replace the files
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#3
bandedenculer

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This is indicative of a sasser (or variant) infection or leftovers from one. Try running the sasser remove tool.
http://www.sarc.com/...tools.list.html
Make sure you've patched all the security exploits on your system relating the the RPC overflow vulnerabilities.

http://www.microsoft...n/MS04-011.mspx

Like keith said, SFC /scannow to check file integrity too.
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