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Avast Network Shield: Blocked DCOM Exploit

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Avast Blocked DCOM Exploit

If you got a warning from Avast’s Network Shield indicating that it has blocked a DCOM Exploit attack from an IP address, you’ve come to the right place. Continue reading to know more about the Network Shield DCOM Exploit warning and what to do about it.

What is DCOM?

DCOM (Distributed Component Object Model) is a mechanism that allows software on your Windows computer to communicate over a network.

Does DCOM make my Windows computer vulnerable?

It does. It is enabled by default in every Windows installation, and very often, it is exploited by viruses and worms. The loophole could be used by any attacker to gain control over your system.

Is there a patch that solves this vulnerability?

Yes, there are two. First, download DCOMbobulator to see if you need to apply the patch. If yes, install this and then this.

Can DCOM be disabled on Windows?

Yes, it can be. You can use the aforementioned DCOMbobulator to disable DCOM on your Windows computer.

Otherwise, you’ll have to follow the steps mentioned below:

  1. Go to Start > Run, type ‘regedit’ and hit Enter
  2. Go to HKEY_LOCAL_MACHINE\Software\Microsoft\OLE
  3. Change the value of EnableDCOM from Y to N
  4. Restart Windows

Disable DCOM

You can also disable DCOM in Windows by following these steps:

  1. Go to Start > Run and type dcomcnfg.exe
  2. Expand ‘Component Services’ which can be seen under ‘Console Root’
  3. Open ‘Computer’
  4. Right click on ‘My Computer’ and choose ‘Properties’
  5. Click the ‘Default Properties’ tab
  6. Uncheck the option ‘Enable Distributed COM on this Computer’
  7. Restart Windows

How to disable DCOM in Windows?

Disable DCOM in Windows XP

That’s it. You’ve disabled DCOM on your computer.

What about Avast’s “Network Shield: Blocked DCOM Exploit attack” warning? How to get rid of it?

Avast Blocked DCOM Exploit

There’s probably a virus or worm that’s lurking around in your computer. Do a full scan. That should solve the issue.

Also, install a free firewall software which could prevent all such communications in the first place. That would do. If you’ve got any questions, please ask them in the comments section below.

Written by Killer Tech Tips

January 14th, 2010 at 9:27 pm

  • Wow! You resumed blogging. Glad to see you back.

  • Thanks Pallab. Trying 🙂

  • Good to see you back again and nice tutorial.

  • Thanks! i’ve got this problem for a week, but i don’t know how to do. so i decided to reinstalling my comp

  • Fiona Perrin

    It’s great to finally get clear directions to stop this problem, it has worried me for a long time! I keep getting the DCOM exploit attacks, too however, my DCOM is apparently already disabled! What should I do now??

  • lizzel

    wow thanx for the help….i disabled it thru windows(i use windows 7 home premium)
    I dont see the pop ups about dcom expoit attack anymore.
    But im a bit worried….are u sure its ok to disable it…..could this do anything to my system as in cause it to stop functioning or something or fail 🙁

    please reply

  • really nice info Palab i prefer disabling it after installing . thanks for the tip

  • Kiran

    Fixed that bug “DCOM”…. thanks ganesh.

  • Jai

    Thanks a ton man.. this should be enough for disabling it I guess..

  • Lukman

    thankz yah for the Info,, i’ts really help my problem..

  • nice tutorial. Will be helpful for many users.

  • Sku11

    The first downloaded listed in this tip/tutorial/guide
    is a virus. Do not download it…

  • Hirantha

    Thank you so much. It fixed the problem!

  • Pradeep

    Nice Tutorial , i am happy about your service, thanks very much

  • Thanks a llot dude 😀

  • Gulsahuzunoglu

    i think it helped. cheers

  • Yes I am having this issue but I cannot understand fully your instruction to get read of it..since i have my fire wall and avast, I think they will take care of this DCOM so why do i have to fix anything? give me your thoughs in face book as my yahoo is down.