Having problem with dllhost.exe

July 18, 2011 at 19:28:55
Specs: Windows Vista
what is dllhost.exe? It is in my task manager and taking up to 35% of CPU time. I cannot afford to buy these registry cleaners like RegistryBooster and Uniblue Registry Booster, etc. What are my options? Is there anything for free that will get it out of my system? Why can't I just end it from the task manager? I am almost certain it is not the valid dllhost.exe that is part of the OS.

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July 18, 2011 at 19:47:59

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July 18, 2011 at 21:26:41
Tom Clark,

It would be worth your while to crosscheck the file before doing anything with it.

The dllhost.exe file is located in the folder C:\Windows\System32

Search for the file, right-click, select Properties, and see where it is located.

Post back on what you find.

Retired - Doin' Dis, Dat, and slapping malware.

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July 24, 2011 at 06:22:23
dllhost.exe should be located in C:\Windows\System32. Some malware camouflage themselves as dllhost.exe:
* W32/Lovelet-Y (%SystemRoot%\dllhost.com, %SystemRoot%\System32\dllhost.com)
* W32/Nachi-A (%SystemRoot%\Wins)
* W32/Rungbu-B (%SystemRoot%\setup\dllhost.com, %SystemRoot%\System32\dllhost.com)
* Troj/Sivion-A (%SystemRoot%\System32\System\dllhost.exe)
* W32/Lovelet-DR (%SystemRoot%\System32\dllhost.dll)

It is COM Surrogate process and known a few issues with legit process. If you have IIS running the some incorrectly written script may cause high CPU. Also dllhost.exe is running COM+ DLL. To fix it: Go to Control Panel - Administrative Tools - Services and you will find "COM+ Event System Service". Stop or disable the service, and dllhost.exe will go away.

Read here more info about dllhost.exe
Hope it helps.

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