Windows Legacy OS forum

General discussion

UPHClean and lsass.exe

XP Pro SP1, all updates except SP2. Current AVG, Spybot, and Ad-Aware scans.

For about 2 weeks my applications event viewer has been giving the usernv eventid 1517 error on every shutdown or restart. I don't remember installing anything except windows critical updates and avg updates. I haven't made any changes in Services.

In my quest to discover what process is causing the hang-up, I installed UPHClean and set it to just report. It reports the problem is lsass.exe (516) HKCU(0x3dCool

File search shows lsass.exe in C:\Windows\system32 C:\Windows\ServicePackFiles\i386 and C:\Windows\system32\dllcache. AFAIK this is as it should be.

Tasklist /svc shows lsass.exe running ProtectedStorage and SamSs. Both of these services are set to Automatic and Running, which, to my knowledge, is how they have always been.

I'm at the end of my knowledge skills now. What do I do from here to discover which of these processes is causing the error and how to fix it?

Discussion is locked
You are posting a reply to: UPHClean and lsass.exe
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: UPHClean and lsass.exe
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
More info

In reply to: UPHClean and lsass.exe

Stopping and disabling these 2 services doesn't help. The lsass.exe now shows in tasklist as PID 512 with service as N/A. UPHClean still shows lsass.exe as being the problem.
Where do I go from here to solve this?

Collapse -
Sorry for the delay

In reply to: More info

lsass.exe is a known Windows service that needs to run. However, there are variants that are viruses. The variants can either be a different name, eg lsasss.exe, or the same name, lsass.exe, but located in a different folder.

Have a look at this site,
click the ''L'' button, and scroll down to lsass.exe for more information.

If the lsass.exe found by UPHClean is located in C:/Windows/System32, then it is probable that the one you have is ok, and UPHClean is declaring a ''false positive'', ie, it is ok but the program thinks it is not.

If the file found by UPHClean is lsasss.exe, or lsass.exe in a different folder, then you have a worm, or a virus.

I don't know anything about UPHClean but as it is a Microsoft product I wouldn't have thought it would report a false positive, (that very often happens with dubious trial anti-malware software where the makers want you to buy the full product).

I found this site about UPHClean;

and this earlier CNET forum thread about someone who had used it;

If no-one else here can offer any suggestions, why not post the same question in the Computer Help forum on this site. You may be more fortunate there.

Good luck,


Collapse -
Also see if this link

In reply to: UPHClean and lsass.exe

Collapse -
Thanks for trying

In reply to: UPHClean and lsass.exe

I have run AVG, Ad-Aware, Spybot, Stinger, CWShredder, Panda and Symantec online scans. No problems found.

But my computer is slow, especially shutting down and starting up. While searching for the cause of the slowdown, all I could find was this error in Event Viewer.

Event ID 1517 Source Userenv
The Windows saved user N+++++\Sheila +++++ registry while an application or service was still using the registry during log off. The memory used by the user's registry has not been freed. The registry will be unloaded when it is no longer in use.
This is often caused by services running as a user account, try configuring the services to run in either the LocalService or NetworkService account.

As stated, UPHClean reports that lsass.exe is the process that is causing this error.

I still get the error even when Tasklist /svc reports that all that is running when I am shutting down or restarting is:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Sheila +++++>tasklist /svc

Image Name PID Services
========================= ====== =============================================
System Idle Process 0 N/A
System 4 N/A
smss.exe 384 N/A
csrss.exe 432 N/A
winlogon.exe 456 N/A
services.exe 500 Eventlog, PlugPlay
lsass.exe 512 N/A
svchost.exe 664 RpcSs
svchost.exe 700 AudioSrv, Browser, CryptSvc, dmserver,
EventSystem, lanmanserver,
lanmanworkstation, Netman, RasMan, Schedule,
SENS, ShellHWDetection, srservice, TapiSrv,
TermService, Themes, winmgmt, wuauserv,
spoolsv.exe 900 Spooler
svchost.exe 1016 stisvc
explorer.exe 1312 N/A
cmd.exe 1456 N/A
tasklist.exe 1988 N/A
wmiprvse.exe 1872 N/A

C:\Documents and Settings\Sheila +++++>

I am at a loss to discover why this started. And it may be a total coincidence and unrelated to my slowdown.

But it still bugs me, and I'd like to track down the problem and get rid of the error in Event Viewer.

I guess now I will uninstall the Windows Updates I have done is the past 2 weeks and see if one of them is causing the slowdown and/or the error.

Popular Forums

Computer Newbies 10,686 discussions
Computer Help 54,365 discussions
Laptops 21,181 discussions
Networking & Wireless 16,313 discussions
Phones 17,137 discussions
Security 31,287 discussions
TVs & Home Theaters 22,101 discussions
Windows 7 8,164 discussions
Windows 10 2,657 discussions


Here's Everything to Know About the 2019 Grammys

Find out how to watch the Grammy Awards if you don't have cable and more.