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Windows 7: svchost.exe "DCOM launch" maltreats my harddisks

31 Aug 2012   #1

Windows 7 Professional x64
svchost.exe "DCOM launch" maltreats my harddisks

Hi everyone,

I just set up my new HTPC with a RAID5 consisting of three drives when I noticed a constant (~ every second) harddisk noise and HDD-LED flashing, so I downloaded Process Monitor to analyze who is penetrating my drives.

It turns out that svchost.exe is requesting registry files of my DeviceClasses nearly every second. (svchost.exe 764 RegQueryValue / RegCloseKey / RegQueryKey)

These are in particular my Vertex 3 SSD, the RAID 5 (Store) and so it seems a USB 3 HUB (Not a single USB device is connected, though!)




This constant accessing is not only annoying and doesnt let the drives to go into sleep, I am afraid it reduces the drives lifespan.

Of course I checked the standard drive accesser like defrag, indexing et.

I found this problem a couple of times on the internet but without a helpful answer.
I even deleted the keys but Windows just recreates them after reboot (even the USB one without any USB device connected)

Does anybody have an idea what is going on here? I am pretty stumped...

Thanks in advance.

My System SpecsSystem Spec
01 Sep 2012   #2

Windows 7 Professional x64

come on where are the nerds when you need them? :/
My System SpecsSystem Spec
03 Sep 2012   #3

Windows 7 Professional x64

My System SpecsSystem Spec

03 Sep 2012   #4

Windows 10 Pro (x64)

DCOM is not doing itself, it is a host to other software, could be another application or a driver.
Use Process Monitor and Process Explorer to determine what is opening those registry keys.
My System SpecsSystem Spec
08 Sep 2012   #5

Windows 7 Professional x64

OK you need to help me here. Process Monitor shows me that svchost.exe is opening those keys. When I look into the event properties of this opening event I just find "C:\Windows\system32\svchost.exe -k DcomLaunch" to be the source. Where do I need to look?

Process Explorer on the other hand does not seem to show any registry activity, just processes. How am I supposed to know which one is accessing the keys when it isnt shown.

My System SpecsSystem Spec

 svchost.exe "DCOM launch" maltreats my harddisks

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