Excessive CPU usage from explorer.exe

P

Paul

Help sought: Carrie Frisch MVP - hope you read this as
need additional info on some feedback you've placed to
others on this.

Browsing the system causes it to virtually freeze. Task
manager shows explorer.exe sits at or near 100%, and with
time, consumes more and more memory, until it begins to
exhaust even the page file.

KB 819946 outlines that there is a problem in several XP
versions, but the suggested fixes (effectively disable the
gui enhancements in XP) are not complete enough to stop
the problem, and the workaround only applies for the one
situation (right click) and not the more general issue of
just browsing folders. Carrie made reference that if you
rang MS, they could supply a fix. However best efforts of
the MS support staff haven't found any hotfix or
additional info for this yet. There is an open SRS for
this with them.

System is a P4 2.2GHz, 512MB RAM, 80GB RAID unit, running
XP Pro SP1, with all current patches applied, plus Office
XP Pro, also at current patch, and some 3rd party
multimedia (video editing) s/ware.

A second system, (slower, Celeron 600) with the same apps
and more, BUT with Windows Updates only current to about
December, does NOT show the problem.

Explorer.exe version 6.0.2800.1221 is on both the good and
the sick unit.

The problem system has been reloaded from scratch twice in
last 6 weeks. 1st time, had bad performance but also had
a HDD problem. Replaced drives and rebuilt before I
realised there was also a software issue.

I have applied the fixes in the KB, but can also generate
the problem in a number of other ways. "Show Details" in
folder view can also kill the system. I've watched
Explorer enumerate the metadata on files (5 AVI's) in a
directory, and hang after it's shown the video length for
the first 3.... Switch to "show icons", restart, go to
same folder - no problems. Change the view again to "show
details" - and explorer.exe locks again. There are other
ways to trash the performance as well. Doing file searches
within some apps will do this too....

Carrie referred to some fix she'd heard of for this:
would love to know more details (as would the MS techs
working on my case...) Any additional tips gratefully
sought.

Either posts, and/or email to (e-mail address removed) -
but remove the nospam references in the address of
course....
 
D

danmar7

I have a similar problem - as soon as I boot up,
explorer.exe climbs to 100% cpu until all virtual memory
is consumed. It just started doing this a couple of weeks
ago when we moved the pc to install a new one. (So it's
now stand-alone, no network/internet connections.)

I ran McAfee stinger and didn't find any viruses. Am
running spybot now and trying to get windows updates
copied over to add 2004 patches.
 

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