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Windows 7: WUAUSERV (Windows update) High CPU usage

15 Jun 2016   #1
jorb

Genuine Windows 7 Home Premium 64-bit
 
 
WUAUSERV (Windows update) High CPU usage, error 0x80070057

After the weekly Microsoft patch Tuesday 5-17-16.
My computer started running Hot.
I check the resource monitor and the CPU is running over 50%.
Under services it shows WUAUSERV (Windows update) keeps using the CPU at over 50%.
I used System file checker and there was no problems.

I downloaded the System Update Readiness Tool and it has been over a hour and a half.
And the System Update Readiness Tool, stand alone installer is still searching for updates on the computer.
And WUAUSERV (Windows update) keeps using the CPU at over 50%.
When I stop service of WUAUSERV (Windows update) from the resource monitor, the CPU usage returns to normal.
I also did a full scan with Malwarebytes and Microsoft Security Essentials with zero threats detected.

I used Windows update Troubleshooter and it showed error 0x80070057 and it was fixed.
Then next screen showed the error 0x80070057 not fixed.
WUAUSERV (Windows update) High CPU usage-troubleshooting-report.jpg
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WUAUSERV (Windows update) High CPU usage-troubleshooting-report-2.jpg




My System SpecsSystem Spec
.
15 Jun 2016   #2
johnny20

Windows 7 Home Premium 64
 
 

That's because win7 keeps searching for updates. When the search is over, wuauserv goes down.

See the threads about win7 taking forever to complete searching for updates.

SURT shouldn't search for updates. I think you should run that with updates turn off and wuavserv stopped. I installed that today also and it didn't search for updates.

How long does it take for your pc to complete search for updates?
My System SpecsSystem Spec
15 Jun 2016   #3
jorb

Genuine Windows 7 Home Premium 64-bit
 
 

Quote   Quote: Originally Posted by johnny20 View Post
How long does it take for your pc to complete search for updates?
Windows update keeps searching and searching but never finds any updates.
If I just open the windows update window WUAUSERV starts.
I do not have to click "Check for Updates" for WUAUSERV to start.
I stop service of WUAUSERV from the resource monitor, then CPU usage returns to normal.
Also, WUAUSERV starts just buy logging on to the internet.

I tried SURT again after stopping service of WUAUSERV.
And SURT started, but after a hour, WUAUSERV seemed to stop SURT.
So I stopped it and it said that not all updates were installed.
I tried to start SURT again and it went back to searching for updates on the computer.
My System SpecsSystem Spec
.

15 Jun 2016   #4
jorb

Genuine Windows 7 Home Premium 64-bit
 
 

Update: SURT now says Hotfix for Windows (KB947821) was not installed.
Now what do I Do?
My System SpecsSystem Spec
15 Jun 2016   #5
johnny20

Windows 7 Home Premium 64
 
 

I doubt SURT will solve your problem.

You need to have a result to that search. It can't just search forever, wuavserv will run forever eating your CPU.

Try reading all this threads on how to deal with windows stuck updates.

What update client are you using?

When did you last install an update, and which one was last?
My System SpecsSystem Spec
15 Jun 2016   #6
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

SURT is a troubleshooting tool, it looks for errors and tries to fix them.
On completion, and it can take HOURS, it will produce a log in the CBS folder.
ITS NOT a TRUE update, and will not appear in your installed update log,
BUT it is part of WUAUSERV.

Roy
My System SpecsSystem Spec
15 Jun 2016   #7
johnny20

Windows 7 Home Premium 64
 
 

Quote   Quote: Originally Posted by torchwood View Post
SURT is a troubleshooting tool, it looks for errors and tries to fix them.
On completion, and it can take HOURS, it will produce a log in the CBS folder.
ITS NOT a TRUE update, and will not appear in your installed update log,
BUT it is part of WUAUSERV.

Roy
I installed today. It's not a tool, it scans while installing and creates a log. My log was clear.

It appears in this list, but you're right it's not present in installed updates.

Anyway, he should first focus on other things, I doubt surt will fix the problem.


Attached Thumbnails
WUAUSERV (Windows update) High CPU usage-untitled.jpg  
My System SpecsSystem Spec
15 Jun 2016   #8
jorb

Genuine Windows 7 Home Premium 64-bit
 
 

Quote   Quote: Originally Posted by johnny20 View Post
I doubt SURT will solve your problem.

You need to have a result to that search. It can't just search forever, wuavserv will run forever eating your CPU.

Try reading all this threads on how to deal with windows stuck updates.

What update client are you using?

When did you last install an update, and which one was last?
Update client version 7.6.7601.19161
KB3156417 Installed on 6-7-16
My System SpecsSystem Spec
16 Jun 2016   #9
johnny20

Windows 7 Home Premium 64
 
 

Ok so it worked until recently and now it's taking forever.

I had the same problem - how I solved it - I installed KB3161664 (set to Never check for updates and make sure wuauserv is stopped first), download it from MS website, install, then restart and search for updates. That's what I did yesterday and it found updates in about 2h. I didn't install them since it's very slow but at least wuauserv will stop. Or you could just turn off updates, wuauserv will not bother you as long as you set never check for updates, and wait until downloads get faster.
My System SpecsSystem Spec
16 Jun 2016   #10
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by johnny20 View Post
Quote   Quote: Originally Posted by torchwood View Post
SURT is a troubleshooting tool, it looks for errors and tries to fix them.
On completion, and it can take HOURS, it will produce a log in the CBS folder.
ITS NOT a TRUE update, and will not appear in your installed update log,
BUT it is part of WUAUSERV.

Roy
I installed today. It's not a tool, it scans while installing and creates a log. My log was clear.

It appears in this list, but you're right it's not present in installed updates.

Anyway, he should first focus on other things, I doubt surt will fix the problem.
Perhaps I'm not understanding your post. Are you saying that the SURT (System Update Readiness Tool) is not a tool?



If your solution of installing KB3161664 does not work for the OP, then I would suggest option three in this tutorial: Windows Update - Reset as the next step. It could be that the WU process is just broken again. It might take up a lot of CPU cycles and bring weak hardware to its knees.
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