dllhost.exe constant 50% cpu

[Sefyu]

I just did a clean install of Windows 7 Ultimate x64 and I have a new problem:

dllhost.exe (COM Surrogate) is constantly taking up ~50% CPU, I don't have Nero installed, the only things I've installed so far are:

Windows Live Messenger + Plus! by Patchou
Firefox
Alcohol 120%
WinRAR
nVidia Forceware(newest)
Drivers for my E-MU 1212M soundcard
In the middle of an installation of Adobe Creative Suite(but the problem was before I started installation).

UAC is on.

I've seen some topics discussing high RAM usage of this process, but here it's only taking 2MB RAM.

Is this a known issue?

 

[Sefyu]

I found out that the module to blame is ole32.dll that's running inside dllhost.exe. But I've found nothing about this problem...

 

[Sefyu]

Well, a reboot solved the problem, so it seems, lets hope it doesn't come back...

 

[Sefyu]

It seems to be coming back, I did some tests, and it does not seem that a particular app is causing it, it just appears when it feels like it.
Ending the process causes it to spawn again, when I end it again it goes away and my PC seems to be running fine after that.

I'm stull curious of the cause. Maybe we will know more when more people will start using Windows 7.

 

[str4w]

I get this when browsing through external or internal HD, drives me crazy. I have to work with taskmanager open all the time to restart dllhost.
Any suggestions

 

[Sefyu]

The culprit on my system was a wav file that was on my desktop, apparently Windows was trying to generate a preview or something, which didn't work.

I tried this program Process Monitor(google: "procmon") which showed the explorer.exe was trying to access the file continuously.


Try checking if there are any media files in the root of you ext drive, delete them and check what happens

Or you could just check with procmon without trying, the programs logs _everything_ that you computer does, and you have to scroll throug millions of events(but the media file that causes the problem will be listed many times and be easy to spot).

 

[yeyunpeng]

I had the same problem but I solved it.

That's because I installed win7codec,
then my win7 can display thumbnails of FLV files.
But some bad FLV files can't be decoded by WMP,then there will be some thing wrong with dllhost.exe explorer.exe wmplayer.exe
Those may get 50% usage of cpu.

When you explore some bad flv files by thumbnail,you will meet this problem.
What will be the worst:a bad flv files on your desktop,and you had not turn off thumbnail.---Every time you refresh the desktop,a dllhost will appear.

 

[Jacee]

Messenger + Plus! by Patchou
This is an adware application. Uninstall it.

 

[Sefyu]

It is not adware, you can choose if you wish to install the "sponsor".

 

[vinaydargar]

Thank you!

Thank you so much, yeyunpeng! I had been having this problem too (i have win7codecs too), and now i know why. Thanks a lot, Dllhost.exe was driving me nuts, (it always took 100% of the cpu, except when i tried to open some other program of folder it went down to 90% then back to 100%...seems it makes way a bit if you need to run something else...), making my pc lag extremely. However i still haven't found which file is causing the problem. Is there any way to find out?

 

[satanness]

Seems we didn't solve the problem.
I've got a solution to this. Just get an "content" view of the folder which contains flv files, things like this would not happen. But I can't solve it fundamentally, either.

 

[yeyunpeng]

Thank you so much, yeyunpeng! I had been having this problem too (i have win7codecs too), and now i know why. Thanks a lot, Dllhost.exe was driving me nuts, (it always took 100% of the cpu, except when i tried to open some other program of folder it went down to 90% then back to 100%...seems it makes way a bit if you need to run something else...), making my pc lag extremely. However i still haven't found which file is causing the problem. Is there any way to find out?

Sorry for reply you with long time gone.
I think you can try to turn off thumbview of win7 then reboot to watch whether it come again.If it can not be solved,means your win7's problem is not cased by thumbnail.Can't help you,sorry.

 

[coolcole]

I think I found something...

For those of you who are still struggling with this I think I found something. I had some large audio files (and video files) on my desktop. Once I moved those to another folder, the locked 25% dllhost issue cleared.

Prior to that I tried these things which did not solve:
- Malwarebytes Full Scan
- Microsoft Security Essentials Full Scan
- System restore to 2 weeks prior
- Removal of K-lite (Base, Full and 64bit)
- Removal of Tversity
- Close all open programs using procexp

 

[Yodamanjaro]

I am not able to move the wav file to another folder nor am I able to delete it using explorer.exe.

If anyone figures this out please reply.

 

[Sefyu]

Use the program Unlocker to move or delete the file.

Download: UNLOCKER 1.9.1 BY CEDRICK 'NITCH' COLLOMB

 

[Yodamanjaro]

Does anyone know what causes this though? Each time I render a wav file with Fl Studio now causes this problem.

 

[Sefyu]

With what settings do you export the wav?

I have a suspicion that this is codec-related.

 

[Yodamanjaro]

Depth: 16 bit int
Quality: 512 point sinc
Dithering is ON
Alias-free TS404 is ON
HQ for all Plugins is ON
Disable Max Poly is ON

 

[Sefyu]

Looks normal... I suggest experimenting some with codecs codec tools. Tools - Video software and downloads - VideoHelp.com

 

[MH20CZ]

hey guys i have the exactly same problem that yodamanjaro has. workin with fl and when im done after rendering cpu runs at 80°C usage around 55% top usage is taken by explorer, then dll host and svchost. once i terminate explorer.exe and run it once again pc slowly starts to lose control, doesnt respon files wont load, moving deleting is impossible etc.

any suggestions how to fix this whole bullshit that happens only on this goddamn win7?