svchost, wuauclt using 100% CPU on startup

Everyone time machine starts up, svchost uses 100% CPU for over 30mins.

Installing KB916089 (FIX: When you run Windows Update to scan for
updates that use Windows Installer, including Office updates, CPU
utilization may reach 100 percent for prolonged periods) didn't fix the
problem.

Anyone else seeing this?

Deleting C:\WINDOWS\SoftwareDistribution makes no difference.

yesmen wrote:
>
> Everyone time machine starts up, svchost uses 100% CPU for over 30mins.
>
> Installing KB916089 (FIX: When you run Windows Update to scan for
> updates that use Windows Installer, including Office updates, CPU
> utilization may reach 100 percent for prolonged periods) didn't fix the
> problem.
>
> Anyone else seeing this?

Windows version? Is Windows Defender also installed and is it v1.1.1593.0?
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)

yesmen wrote:
> Deleting C:\WINDOWS\SoftwareDistribution makes no difference.
>
> yesmen wrote:
>>
>> Everyone time machine starts up, svchost uses 100% CPU for over 30mins.
>>
>> Installing KB916089 (FIX: When you run Windows Update to scan for
>> updates that use Windows Installer, including Office updates, CPU
>> utilization may reach 100 percent for prolonged periods) didn't fix the
>> problem.
>>
>> Anyone else seeing this?

I had Defender version 1.1.1347.0 installed. Windows XP SP2.

I have done the following steps (with the Hotfix KB916089 installed):

- Upgraded Defender to v1.1.1593.0 : problem still exists
- Removed Defender completely and reinstalled Defender v1.1.1593.0:
problem still there.
- Removed Defender completely: FIXES ISSUE.

With Defender removed, triggering a manual microsoft update works
(wuauclt /detectnow)

Also, I noticed with Defender installed, manually running Update
Definitions in Defender causes svchost to immediately use 100% CPU, with
no success after 20mins (Dell Latitude C610, 1GB RAM)

In my case there appears to be a race condition between Defender and
Auto Update.


PA Bear wrote:
> Windows version? Is Windows Defender also installed and is it v1.1.1593.0?

same problem here on my dell latitude d800 win xp sp2. i installed the latest
version of win defender that is available for download. svchost.exe use 100%
cpu when auto/manual update of definition starts. system freezes and can't do
a thing need to restart my laptop the hardware coz doing system restart is
not working had to press and hold the power on button.

"yesmen" wrote:

> I had Defender version 1.1.1347.0 installed. Windows XP SP2.
>
> I have done the following steps (with the Hotfix KB916089 installed):
>
> - Upgraded Defender to v1.1.1593.0 : problem still exists
> - Removed Defender completely and reinstalled Defender v1.1.1593.0:
> problem still there.
> - Removed Defender completely: FIXES ISSUE.
>
> With Defender removed, triggering a manual microsoft update works
> (wuauclt /detectnow)
>
> Also, I noticed with Defender installed, manually running Update
> Definitions in Defender causes svchost to immediately use 100% CPU, with
> no success after 20mins (Dell Latitude C610, 1GB RAM)
>
> In my case there appears to be a race condition between Defender and
> Auto Update.
>
>
> PA Bear wrote:
> > Windows version? Is Windows Defender also installed and is it v1.1.1593.0?
>

I, too, have the exact same problem. The hotfix doesn't work, and the only
solution is to revert back to Windows Update (and check Office Update
manually).

What makes it even odder is that when Task Manager shows 100% CPU during
startup (or when Microsoft Update is manually run), there isn't even any
hard-drive activity. You would think that if the CPU is being fully taxed,
the hard drive would be going wild. But, nothing...not even a whimper out of
the hard drive. Still, it is nearly impossible for anything else to be
opened while the 100% CPU is in effect.

I've just got off the phone with a fellow on the Windows Update
Development Team who says that this is a known issue and it continues to
stump their team. Let's just hope a solution comes soon!