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Lsass.exe - operation failed

By surfersaiyan ยท 28 replies
Feb 20, 2009
  1. Squiggly1

    Squiggly1 TS Rookie Posts: 44

    I would run a virus scan on the drive. Not sure your level of computer expertise, but this can be done with a USB to SATA/EIDE adapter to connect to a second computer, or by connecting the drive to a 2nd computer as a slave or second drive.
    If a virus cleaning doesn't work then hit F8 (most PC's) at startup to see if you can start with the command prompt to do a system file checker, then try last known good configuration.
    I'm not sure if a corrupted password itself would cause this. Probably not. Probably the lssas program itself. Just to be sure you could try resetting your log on password with NT Registry & Password Editor. It's an offline program (freeware) that boots from CD at startup.
    If you still can't get to the desktop, then try a repair install. Often a repair install doesn't fix these things. Then you're left with nothing but to reinstall Windows.

    If you have the Sasser worm then here's Microsoft's removal tool
  2. Bobbye

    Bobbye Helper on the Fringe Posts: 16,335   +36

    Check the Event Viewer for any Error that corresponds to the time of this message:

    Start> Run> type in eventvwr

    Do this on each the System and the Applications logs:

    • [1]. Click to open the log>
      [2]. Look for the Error>
      [3] .Right click on the Error> Properties>
      [4]. Click on Copy button, top right, below the down arrow >
      [5]. Paste here (Ctrl V)
      • You can ignore Warnings and Information Events.
      • If you have a recurring Error with same ID#, same Source and same Description, only one copy is needed.
      • You don't need to include the lines of code in the box below the Description, if any.
      • Please do not copy the entire Event log.

      Errors are time coded. Check the computer clock on at message time.

  3. surfersaiyan

    surfersaiyan TS Enthusiast Topic Starter Posts: 100

    guys, thanx for all your tips, ideas and support!

    i'm going O/S for a couple of weeks tomorrow so i'm not gonna be able to get onto this til i get back.. bar a bit of bludging on the packing that is ( i doubt the missus'd be too happy!).

    but i'll get onto it for sure then..

  4. surfersaiyan

    surfersaiyan TS Enthusiast Topic Starter Posts: 100

    i think it may have all come down to a dodgy HDD.

    i blasted the hard drive and reinstalled windows. and within about 3 days i couldnt connect to the internet. kept getting the message...

    "the network did not assign your computer a network address"

    and it was doing this infrequently before.

    so i've gone back to the original HDD i got with the laptop and two weeks later have had no troubles, no internet connection issues and no lsass.exe probs either.

    just for those keeping an eye out for it.. i got an adapter and used a 16GB CF card instead of a hard drive just for testing purposes.

    i dont know if i'm doing something wrong but it took me like a full day to install windows and about 10minutes to install just about anything on it. i woulda thought it woulda been faster than that.

    when up and running it works fine but a bit slow.. any ideas?
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