Why does dllhost.exe Com surrogate consumes memory untill crash

if you hit control alt delete and end com surrogate process it'll free up the memory and you can work again. but it last a short while i find myself having to constanly end the process

Within 5 minutes the problem was back.

If the problem on your system is, what is described pages ago, you should be able to find some video files, which do not have visible thumbnails, but should.

Typically mp4 with h.264 and side-by-side 3D.

The memory leak, along with certain other bugs, which was introduced with the infamous KB2670838 might be triggered under other cicrumstances as well. But if it hangs on certain files, theses files would not have a thumbnail.

On a related note: can anyone confirm that Windows 10 has the same bug? The only "fix" I am aware of from MS was to not make KB2670838 mandatory for some other updates. But since this is a multiyear old issue, I lost track. So this garbage feature might as well have been carried over to Win10...

Within 5 minutes the problem was back. I followed: 

http://www.sevenforums.com/tutorials/10794-thumbnail-cache-enable-disable.html

Here you turn of the thumbnail cache function. I figured since I have an ssd it wouldn't take much longer to load the thumbnails from my harddisk. 

Hope this is a more sustainable solution.

Try running system file checker through cmd. 

http://support.microsoft.com/kb/929833 

It is recommended to perform scan using:

http://www.malwarebytes.org/

Make sure your system is clean first. use CCleaner to get rid of junk files: http://www.piriform.com/ccleaner/download

Perform scan for spyware also using superantispyware http://www.superantispyware.com/ 

Hi Guys,

I just fixed the com surrogate issue for my pc and thought perhaps this could help others.

System:

Windows 10, HP elitebook 8540w, Intel i7 (1.6 Ghz), 8 gb RAM, 250Gb samsung EVO ssd.

Problem:

Com surrogate standard used 15-20 percent of cpu (Intel i7 1.5 Ghz) and my fan was blowing crazy all the time while browsing my pc using file explorer or even at idle. Each time it blows for a couple of seconds making noise, then stops and after a while starts again. 

Besides this my explorer was have a lot of trouble. Loading after opening took forever and in some cases did not even load. When navigated to a specific folder there was no problem. Also, thumbnails weren't displayed, just blank file icons. 

Solution(s):

I googled for com surrogate problem and for windows 10 thumbnail problem. First I applied the solution mentioned above, running system file checker through cmd. It said there were corrupted files and that it repaired them. Then I did the malware (like mentioned above). 59 files were found, all moved to quarantine. Many of them had "pup.optional.Amonetize" in their name....

I did not use cc cleaner because when I googled for the thumbnail problem I found that third party programs like that can cause the problem with the thumbnail. According to that website I shift-deleted the content of the folder so explorer starts from scratch with thumbnails: "C:\Users*Username\AppData\Local\Microsoft\Windows\Explorer" .*

Some files remained but that shouldn't be a problem.

After a reboot my fan was running like it should, nice and slow. When starting explorer, it instantly showed my files, like it should. FINALLY!

Notes:

Before I was looking for [SSD / indexing / windows search] problems. Some solutions explained disabling the windows search service via services.msc through RUN, but then ( of course) the search function in the start menu after pressing the windows button didn't work, which sucks because when it works its very fast. Apparently this was not a problem, but I guess a combination of resetting my thumbnail folder and removing malware files fixed it for me.

Hope this helps someone!

Happy fixing.

You can also use this tool:

http://www.symantec.com/security\_response/writeup.jsp?docid=2014-111020-0511-99