Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: New KVM based Win7Pro and 7.6.7600.320

06 Sep 2015   #1

Windows 7 pro
New KVM based Win7Pro and 7.6.7600.320

Like others, I am having a hard time with the newest windows update (.320). Also, similar to the
behavior seen by others is that "check for software updates" never returns -- well at least not
for several hours. I don't have the patience to wait longer than that.

Also the CPU use is seen to increase up to 50% and stay there continually. The responsible service is
svchost on behalf of windows update. I think it's merely 50% because when I redefine the VM to
have 1 core instead of 2, then the CPU usage is instead 100%, but when I increase the number of cores to
4, the CPU usage does not decrease to 25% -- perhaps windows 7 can't handle more than 2 cores.

I watched performance monitor file usage and did initially see some things take place -- especially after reboot, but this dies down to nothing while the CPU remained at 50% for no apparent reason.

Further any updates applied manually (e.g. KB047821) get similarly stuck as long as windows update is running. At first it appeared there was only a window of time that these things could be applied after
reboot, but then I found that following reboot, there are a number of startup tasks that occur, and
following Windows Defender, Windows Update will automatically start.

Turning off automatic Windows update prevents the above and the CPU remains near 0%.

I played briefly with setting the physical ram to various values and settled on 32GB with balloon to 48GB. This is enough to cache all files. Memory usage does not go over 41% (19GB). That might have some effect, but does not prevent the 50% CPU while doing essentially nothing aspect.

I would have applied the supposed update to the windows update update, but that apparently has been
removed by MS.

Attached is the CBS log for suggestions.

My System SpecsSystem Spec
07 Sep 2015   #2

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10

There are no actual errors in any of the CBS data back as far as 30th Aug - but there is some somewhat strange behaviour.
(Windows 7 can quite happily handle 8 cores, BTW)
What on earth are you doing to use that amount of RAM? I routinely run Win 7 VM's in 1.5GB RAM, and although it's a little slow, it's quite bearable. Since I'm limited to 8GB physical on bare metal, it leaves me with enough to have two open VM's and a fully-operative host.
When you're looking at the CPU usage of 50% that you quote - it that on the guest OS or the host? (I assume the guest?).

I'll need to review the CBS data later - but in the meantime please post the Event logs from the guest....
Open Event Viewer
click on the Windows logs entry in the left pane to expand it.
Now click on the Application entry - wait while it loads.
Click on 'File' in the menu bar and select Save...
Save the file as Appevt.evtx
Repeat for the System log
then zip both, and upload them.
My System SpecsSystem Spec
07 Sep 2015   #3

Windows 7 pro

Hey thanks for the reply. The host system has quite a lot of memory, so 32GB is fine. I originally
started with less but increased it later because one of the the MS updates I read indicated a
possible fix was for resource contention. I wanted to eliminate the possibility of memory contention. Didn't help though.

Good deal on supporting multiple cores.

Yea the 50% CPU stat was taken from performance monitor.

Here's the event logs

Attached Files
File Type: zip (110.0 KB, 0 views)
File Type: zip (401.9 KB, 0 views)
My System SpecsSystem Spec

07 Sep 2015   #4

Windows 7 pro

A small update. I looked at the CBS file and it appears it recognized a bunch of invalid files and so on and
apparently printed the remedy, and claimed that it was successful.

But I looked afterwards and found that it didn't actually accomplish what it claimed it did (like moved pending renames to a destination directory).
My System SpecsSystem Spec
02 Oct 2015   #5

Windows 7 pro

An update.

Well after attempting to avoid the hours-long wait multiple times. I simply let it run, and that in fact (like for many) works. At the end of it, there were 211 updates available which are being installed as I type this -- downloading 991 MB 79% is taking quite a while (15 minutes as least) which is kind of strange as my internet connection is fast enough that downloading 991MB should only take about 2 minutes.

I'm not sure what the minimal thing to do it, but this is what I did...

1. Install from old (pre SP1 windows 7 pro ISO) -- I don't have a SP1 ISO, but that would probably have worked as well or better.
2. Apply the few of applicable immediate updates, but not SP1 via windows update, and then apply SP1 via ISO. In retrospect, this probably was not necessary, but was useful to control what windows update was doing.
3. Set windows update to manual -- don't automatically check/install updates.
4. Apply KB3083324
5. Apply outstanding updates, this will possibly include a handful of .Net 4 updates
6. Update to IE11 not sure this one is necessary or not, but it removed several windows update errors over the course of my 10 attempts.
7. (Possibly run check-it); this will typically not find any errors, but also not have any sort of obvious effect either.
8. (Possibly unrelated optional) Remove all KVM non-essential definitions for cdrom, floppy for the particular VM.
9. Set power options to not sleep
10. Manually click on check for updates button
11. Let it run for (in my case) 15 hours.

The one thing that was completely unnecessary and possibly harmful: SURT.
My System SpecsSystem Spec
04 Oct 2015   #6

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10

SURT may have been unnecessary - but it definitely was NOT harmful.
Since you didn't post its logs, it's impossible for me to know whether it actually did anything at all in terms of system changes, but those changes it may have made (if any) would have been more likely to return the system to full functionality.
My System SpecsSystem Spec
04 Oct 2015   #7

Windows 7 pro

I did post those logs actually, but like I said, there was no improvement over the course of multiple re-attempts both using and not using SURT, the outward effect was always the same. The only success was a scenario that did not involve application of SURT, however.

The assumption of SURT applicability is based in the idea that there is some os misconfiguration that occurs due to some error, but that otherwise the windows update system is correct. It appears this is an example of the opposite happening. The os is correctly configured, but the windows update software is incorrect, and that only from a combination of some subset of 211 updates is it finally cured.
My System SpecsSystem Spec
18 May 2016   #8

Windows 7 pro

finishing up here to close out this error (after recently having reencountered it). Here's the fix
My System SpecsSystem Spec
06 Jul 2016   #9

Windows 7 pro

update to the update: the above does work until Microsoft broke things again in a recent update (approximately June 2016), however, KB3161647 appears to fix things (again).

I guess the takeaway here is there is nothing that SURT will fix in these cases; don't waste your time. Instead, it's a result of Microsoft and their buggy windows update updates which can only be fixed with yet other "magic" patches.
My System SpecsSystem Spec

 New KVM based Win7Pro and 7.6.7600.320

Thread Tools

Similar help and support threads
Thread Forum
HELP: WIN7PRO > WIN10 > WIN7PRO Affected Performance and Connectivity
First, the rant, which you can skip... After discovering that the WIN10 installation deleted some of my software and put on handcuffware, I was livid. As I began to experience compatibility issues with some of my software, limiting my ability to access my LAN, and preventing everyone in my family...
Performance & Maintenance
Win7pro in a VirtualPC - How?
Hi all, Is it possible to install my current win7pro in a Virtual PC without having to buy/Activate another copy? I realize I would actually have to copies running, one to run the VPC and the other running within the VPC. But, being just one human being, I could only ever be using one at a...
Can I use my Win7pro on new my HTPC build?
I have been building a htpc for the media room.I have 1 computer with Win7 Pro on it which is old and out dated with very little use. I have a newer one with Win8 Pro on it(upgraded from Win7 premium) and runs great. I want to use one of these OS with the htcp. Preferably Win7 Pro because of WMC....
Windows Updates & Activation
DUN not installed? (Win7pro 64 bit)
How do I install (or check the installation of/re-install) Dial-up networking? So here's the problem, due to Office 07/Outlook 07/Word apparently not being designed to support faxing (using modem/phone line, not internet fax)from Word to multiple recipients from the contact list, I came across a...
Network & Sharing
7600.16385 is RTM there is no 7600.16386
Read here: Microsoft's Windows 7 gets released to manufacturing Today after all the validation checks were met, we signed off and declared build 7600.16385 as RTM. -Stephan Sinofsky, President of the Windows division at Microsoft Corporation
General Discussion

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:57.
Twitter Facebook Google+