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Windows 7: SVCHOST consuming 25% of my CPUs

16 Jun 2016   #1
theoldwizard1

Windows 7 Home Premium 64bit
 
 
SVCHOST consuming 25% of my CPUs

Just started today, but it seems to be continuous, even after a couple of reboots

SVCHOST consuming 25% of my CPUs-capture.jpg




My System SpecsSystem Spec
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16 Jun 2016   #2
WalterR

Win 7 Pro 64
 
 

You may be getting that from Windows Update. I've got the same, for the last two days. Stopping the process for Windows Update fixes it, but whenever you boot or restart Update, it comes back. Yesterday, I left it going while a ran errands for an hour and it finished whatever it was doing. Today, I left it going 45 minutes and it didn't finish, so I shut it off again. I have updates set to "Check for updates and allow me to decide whether to download and install".

Does anyone know what Update is doing on these long runs?
My System SpecsSystem Spec
18 Jun 2016   #3
Jules2kx

windows 7 64bit Home
 
 

I'm getting the same thing svchost.exe sits at 13 cpu usage the whole time which really slows down firefox, killing it speeds everything up again.

I rebooted the laptop, it took a few minutes to appear I didnt start anything else. Killed it, it came back after a few minutes. Killed it again and hasnt come back. Using Firefox, Greenbrowser ok now.

A few weeks ago I changed my windows update preferences to notify me so I don't get the auto win10 upgrade, seems to have been slow since then (fan also going the whole time)

Done various searches online to find a fix but just seems to be this :

svchost.exe 436
AeLookupSvc, Appinfo, BITS, Browser,
EapHost, gpsvc, iphlpsvc, LanmanServer,
MMCSS, ProfSvc, Schedule, SENS,
ShellHWDetection, Themes, Winmgmt, wuauserv

not sure it is Windows Update ?
My System SpecsSystem Spec
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18 Jun 2016   #4
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi,
Yep every month it seems to be a hot topic
This month you can see if this update is installed if not
Switch your update settings to Never check for updates and restart the machine then manually install it
After it's installed switch the update settings to what ever you had before
Main download page KB3161664
https://technet.microsoft.com/library/security/MS16-073

Win 7 32 bit
https://www.microsoft.com/en-us/down....aspx?id=52823
Win 7 64 bit
https://www.microsoft.com/en-us/down....aspx?id=52794
My System SpecsSystem Spec
18 Jun 2016   #5
WalterR

Win 7 Pro 64
 
 

Start Task Manager, click "Show processes from all users", then sort by CPU usage. svchost will come to the top. Right click on it, choose "go to services" and you'll see a services list. The ones using svchost will be highlighted. "Wuauserv" is Windows Update. You can stop it with no worries, it will restart the next time you boot. That will stop, temporarily, the annoying high CPU use and noisy fan.

I have found that I can restart it when I'll be away from the computer for a while and it will finish its work in an hour or so. Otherwise, I've also found that if I keep killing it for a couple of days, it will eventually stop these runs, for whatever reason. Probably going to come back again at some time, I'd imagine.

About avoiding Win 10...

I also changed my Update settings to "check and notify" to work against getting Win10. This svchost CPU usage behavior started after doing that.

If you're interested in avoiding the Win10 update, check my thread on TenForums - same username. Just turning off updates may not be enough to protect you. My plan:
1-Run Never10 or GWX Control Panel to set registry keys to disable the update
2-Uninstall these updates: KB303583 and KB2952664. Google these and you'll see what they do.
3-Make sure you don't have a $Windows.~DT directory under c:\. This is where the update gets downloaded

Windows Update will push hard to get you to reinstall those two. Don't do it.
My System SpecsSystem Spec
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 SVCHOST consuming 25% of my CPUs




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