Svchost 100% CPU And Possible Windows Update
May 21, 2008
Vista Basic Machine started running very slowly and when I looked in Task Manager svchost.exe was using a 100% CPU. Using system internals process explorer it???s the network service containing crytsvc, dnscach, KtmRm, NlaSvc, Tapisrv and Termservice. Looking inside the thread that is using the CPU is ntdll.dll
I???ve ran all virus and spyware checkers I can and all show no problems. I've booted in safe mode and cleared all the softwaredistribution folder. The slow running does not affect safe mode but as the service is not started no great surprise. Windows Update doesn't work in safe mode either, thanks Microsoft. I tried to update AVG virus checker but it wanted KB929547 applied so I downloaded it and tried to run but after several hours all I got was install failed with 0x800706bb
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Jun 10, 2007
First of all, i have 13 svchosts running. I seem to recall around 3 in windows xp 32. Is this normal? Second, one of the svchost.exe's is ALWAYS using 120+ mb of ram. This can hardly be right, can it?
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Apr 23, 2009
One of the most common questions about system processes is what is svchost.exe and why are there so many processes running? First appearing in Windows XP, svchost.exe hosts multiple services within one process. This allows the operating system to save memory by reducing process overhead by cutting down on the number of processes that need to be running.
Every system service such as Windows Update, Event Log, Terminal Services, Audio Service, etc. runs within svchost.exe. Depending on the access the services need, they are grouped together and are run in a number of processes which explains why you see so many in Task Manager running under different accounts such as System, Local Service and Network Service.
Identifying what services are running is different depending on the version of Windows you have....
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Apr 11, 2008
That is the message I get from the icon in my Vista tray. When I try to manually check for Windows Updates I get the message that I need to "first install an update for Windows Update". When I try to install that update for Windows Update, I get error code 80070643. There is a lot written about Windows Update error 80070643 having specifically to do with restarting the Office Source Engine for Microsoft Office 2003. HOWEVER, I do not have Microsoft Office 2003 installed on my system and this is not my issue! I am quite fearful at this point that I am vulnerable to all sorts of attacks considering that I haven't updated Vista for about 6 months now. This is not good.
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Jun 24, 2009
I had this problem earlier but after installing Vista Service Pack 2 an instance of svchost.exe is using 91,256 K of RAM. I have disabled Superfetch. Go to services reveals:
wuauserv
Winmgmt
Themes
ShellHWDetection
SENS
seclogon
Schedule
RasMan
ProfSvc
MMCSS
LanmanServer
iphlpsvc
IKEEXT
Browser
BITS
Appinfo
AeLookupSvc
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Jun 14, 2008
I looked at the running processes and found 12 svchost.exe running. Can
anyone please explain this?
TX
mary
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Apr 25, 2009
I have Windows Vista Home Premium, and one of these days I saw that the processes svchost.exe should be running. I open my Windows Task Manager, and there is no svchost.exe anywhere. Not a single one!
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Oct 13, 2008
when going to the windows update window,i get a white blank page and it says "the page failed to load"i did restart, same issue.
what is it all about?
and another thing, i don't have a Floppy drive in my computer however a Floppy A: drive is present in "Computer" how can i remove it from the list?
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May 6, 2007
Microsoft Update was first released a few years ago for Windows XP and Server 2003 as a great way to update all of your Microsoft software installed on your PC. Not only would it update Windows, but it would also update Microsoft Office. Are you a Microsoft Outlook user? If so, Microsoft Update would even download updated junk mail signatures when they are released.
In Windows Vista the new Windows Update application is no longer web-based. Microsoft has built-in the old Microsoft Update functionality into the new interface but you need to turn it on before you can use it. Follow these steps to turn on updates for other Microsoft applications: ...
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Feb 26, 2009
The svchost seems to be spiking my physical memory at startup to around 80%.. and it only drops to around 75% And i also know that my computer cannot run to about 93-98% on memory because i suspect Faulty ram from previous problems of mine.( I will be replacing it with 4gb in 1to 2 weeks) Also after disabling Pc tools threatfire & Pc tools firewall i seem to be getting alot of processes which are also playing with my phiscal memory %. b4 i uninstalled The pc tools programs there was only 2-3 svchosts.exe now there are about 13 of them..
Name Memory(underneath each svchost are the services)
svchost.exe 1628
DcomLaunch, PlugPlay
svchost.exe 1984
RpcSs
svchost.exe 3708
WinDefend
svchost.exe 3516
Audiosrv,Dhcp,Eventlog,Imhosts,wssvc
svchost.exe 40348...................
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Mar 23, 2008
When i start up my laptop (vistaHPx86) ITs all good untill 'Svchost' starts.. then my computer forever loads something (I heard the sound),untill I shut down my computer.. this is so annoying any idea what windows is doing?
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May 10, 2010
I started noticing about just 2 days ago. whenever i am playing a movie or any audio file, its not clear because the cpu is being used completely 100% most of the time. I checked the task manager and found out that svchost.exe is taking up most of the memory and cpu! any solutions so that i can fix this, i dont think i can end process svchost since it runs some important applications on windows.
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Feb 25, 2010
I am updating my computer and I thought it was finish but my computer restarts and I encountered the death blue screen. I can't switch into safe mode, safe mode with networking, safe mode with Command Prompt and Last Known good configuration. I don't know how to solve this problem because I can't get into any of the modes and even I inserted the installation disc I can't still see any repair computer or what. It will just turn to blank screen with space at the upper left after if i will insert the installation disc.
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Jan 6, 2010
Two days ago i downloaded a program(Single file abt 100 kb) and executed it. After execution the program's icon simply disappeared from my desktop!
After that I have been getting resident shield pop-ups which tell me about a new file being created in TEMP directory.
eg: FILE NAME: C:windows empcvnp.tmpsvchost.exe
THREAT NAME: Trojan Horse Clicker.AEIO
Detect on open.
PROCESS NAME: C:windowssystem32svchost.exe .
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Mar 22, 2009
I've been a reader of the forums for a little while and found the need to make my first post. Let me preface, that I've done some searching on this issue, tried lots of things, and found nothing to help resolving mine. I'm running Vista Ultimate X64 SP1. It seems that SVCHOST.exe is causing the problem and I've attached a screenshot of the associated services. The problem seems to be random in terms of when it acts up, but quite often. The only temporary resolution is a restart.
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Apr 26, 2009
I understand that Vista SP2 RC update has to be uninstalled before installing SP2 RTM update(when bcomes available). Does 5the Windows Update automatically uninstall SP2 RC update or does it has to be done manually?
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Feb 27, 2009
This file called SVCHOST.exe is consuming my RAM, hard drive, CPU and everything on my Vista machine to capacity use. I know the real one is a necessary program, but there are many copies of this file working simultaneously here and my performance is down to a crawl or a crash. I've looked everywhere for a solution and have tried a couple to no avail. I get no working answers from anyone. Many, many other Windows users are getting this in massive amounts, too, so it's not isolated to me. Everything slows to a crawl often several times a day. I often have to restart. I am told it might be one or more viruses that does this, and I've been told it might be an unfixed bug in Vista, but no square answers. My scans and virus updates from Norton and MS haven't fixed this problem. I am now seriously thinking of copying my whole disk to an outboard memory and reintalling Linux on my machine instead of Windows Vista, as no one seems to want to address this issue in the Vista world, even though it is obviously a very prevalent problem.
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Nov 10, 2009
I have installed Windows Vista in system. After logging into my system,when the desktop appears, i am seeing a command prompt running the below files each time i am logging in C:Windowssystem32tvdm.exeC:UsersusernameApp DataRoamingsupportsvchost.exe
I would like to know what these .exe files are basically and how to make this prompt window prevent from appearing each time when i am logging in. Whether this affects the OS & any of the system files/drivers or whether this is a virus,trojan or any kind of that.
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May 6, 2009
In my network, sometimes my user's laptops freeze during the logon script. Well the computers don't actually freeze, they just don't move beyond the logon script. When I go into task mamager, cpu is running at 100% (2 gb ram and very new processors) and the process taking up the most memory (48,748k)is svchost.exe I think it's associated with the windows search indexing but I'm not completely sure. On the Microsoft support site I saw that I could use the command tasklist /svc to see what is running in svchost. But I haven't figured out yet how to determine exactly what this svchost process is assoicated with so I can prevent it from running all the time.
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Mar 21, 2009
The last time an update was installed was in January..since the next time i was offered an update, Windows Update or any of the programs that use windows update fail to update. Also i can't download the updates manually..standalone msu installers also dont work.. windows defender, IE8 installations also fail to update. And unfortunately i have deleted the recent system restore checkpoints before i knew about this problem. Windows Update gives error 80070002, i have tried the "solution" to delete temp update files, and all other solutions i could find on the internet. Windows defender gives the same error.
The updates can be downloaded from windows update, but cannot be download (not even manually in .msu package) I also lost many shortcut files of MS Office (the icon turned white and they lost their target). Some shortcuts of 3rd party programs are also lost (which were supposed to be in c:windowsinstallerlabla I have Windows Vista Home Basic with SP1 (SP1 came with the ssytem when i bought it). This is very weird. I have no other choice than to reformat drive and use recovery disk.
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Mar 23, 2008
Should this be coming up as an available update in Windows Update now?
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Oct 27, 2009
I can get the good old Windows Update interface back, somehow the interface as changed for something that is less usefull and easy to find what update I need to do or not.
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Oct 4, 2007
i'm using Vista Ultimate version and i'm having all sorts of problems with windows update, Windows live messenger 8.1 and my sidebar.
a) Windows Update- Windows update is failing to load any new updates available, after selecting "check for updates" i am responded with an immediate error; it states. Windows could not search for new updates. Error(s) found: Code 80040154. Get help I have googled my error code but not many responses. So thats my first concern
b)Live Messenger 8.1- Secondly, i was shocked to find my msn wasn't working (works on web based version, so cant be wrong login details) first the typing was slow then i get the error code: 800401f3 denying me login. I searched up the code and found i had to type up some things in cmd...........
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Jul 5, 2008
apon using windows update, it froze around update 25, and windows modules installer stopped working. Now i have a issue with the windows licensing service, one second my windows is legit, the next it isnt, the next windows licensing stops working. I've tried to reinstall 5+ times now, on 2 different harddrives, and it does the same thing on both
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May 12, 2010
If you have installed Windows Mail on a Windows 7 computer,yesterday's update contains a KB978542 patch which changes msoe.dll so it won't run on Windows 7. I had warned about these types of issues when Win7 was first released. Microsoft claims it was done for security=20 reasons, see To get it working again, replace the new non-working copy of msoe.dll in Windows 7 with a copy of the new patched version of msoe.dll from a Vista machine.=20
Note: I ran into permissions issues when trying to delete the = non-working msoe.dll, so rather than fighting that, I renamed the Win7 Windows Mail directory to "Windows Mail-X", then I copied and pasted the Windows Mail directory from the Vista machine. I suspect that Windows Mail will = become less and less compatible with Win7 as time goes along.=20
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Jul 31, 2009
I have Windows Vista Home Premium 32-Bit with NO SERVICE PACKS installed.
The only reason is because I can't get Windows Update to install the updates before I can fully install Windows Vista Service Pack 1 (then later 2)..
The problem is, If I run Windows Update, I get a blank screen and then if I wait about a minute or so I'll get something that says
I have a large amount of Updates to install, I think total the update's total to be 200 mb.
I had Windows Vista before and then now re-installed Vista, So I'm positive I don't have any trojans messing with Windows Update.
Also, My Computer also freezes of I hit the the button that says shut off the pc and install updates.
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May 7, 2008
My automatic updates stop downloading since December last year.
I wish to know if there's a limit for support on that in my licence for DELL Inspiron 1501 but I didn't find anything on that matter.
There are 3 drivers that I cannot upgrade too and aren't working and they are on Network on Device Manager of mt Vista Basic and they are:
Microsoft 6to4 Adapter 10
Microsoft 6to4 Adapter 5
Microsoft 6to4 Adapter 7
that leads to :
c:Windowssystem32DRIVERS unnel.sys
No update is available and they say it's the best driver, but doesn't work fine!
Is there a reason for it related with the denied of Windows Update ?
The error I get, when trying to update is:
ERROR 80244026C ... teht leads to... ERROR0x80072efd.
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Mar 27, 2008
SP1 would not appear for me in the Windows Update even though all hardware and software met MS' spec's for Vista. I did upgrade my sound card and software in order to meet spec's.
I decided to download SP1 from MS download page to get the standalone version. After waiting a couple weeks and reading this and other NG's I decided to install SP1. It installed with out a hitch. I didn't need to un-hook USB devices as was recommended in these NG's and I didn't need to disconnect my UPS. Mater of fact SP1 recommends that you connect to a UPS so you won't lose power while installing.
The only things I did disable where Windows Defender Fire walls and Virus autoscan protection. Every thing else was left as is.
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Jun 27, 2008
Why i cannot do windows update i keep getting the erra code 80244019
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Mar 23, 2008
My Windows Update doesn't show me the SP1 download. I went to the support page from Microsoft (Windows Vista Service Pack 1 is not available for installation from Windows Update and is not offered by Automatic Updates) where I snipped this: does that mean I need the driver displayed, or that SP1 doesn't work with the driver displayed?
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Mar 26, 2008
It's been over a week since the release of the service pack and still it doesn't show up in my Windows Update. I know it was being released "in waves", but shouldn't the US have been first since MS is an American company? Does MS have a tool I could perhaps download to tell me if any of my drivers need to be updated? I remember there was a tool like this when WinXP came out.
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