Problem with CPU

I use CD ver… i think),it worked very well in the past.

But recently,if my computer is off-line, it can be opened and work in low cpu. WHEN I PLUG THE INTERNET CABLE, dragon’s cpu will go up to 100%. (I can open webpages, one or two tabs, but after a few seconds there is not respons)

I have cleared any history, user profile and reinstalled, but this still happen.

Windows7 shows
COMODO Dragon Not responding
‘There was a problem, the problem caused this program to stop interacting with Windows.’
Problem signature:
Problem Event Name: AppHangB1
Application name: dragon.exe,
Application Version:
Application Timestamp: 4ff19479
Hang Signature: c21a
Hang Type: 0
OS Version: 6.1.7600.
Locale ID: 2052
Additional Hang Signature 1: c21a6ed226e12b0c419e7584fe560432
Additional Hang Signature 2: b7b0
Additional Hang Signature 3: b7b0222dcb77da56a1b09d0b61989862
Additional Hang Signature 4: c21a
Additional Hang Signature 5: c21a6ed226e12b0c419e7584fe560432
Additional Hang Signature 6: b7b0
Additional Hang Signature 7: b7b0222dcb77da56a1b09d0b61989862

Plugins/Themes: Default
Dragon Ver:
Install Path:C:\Program Files (x86)\Comodo\Dragon
User privileges:administrator
UAC status:enabled
System Drive:C:
No Google Chrome

PS:IE is in working order all the time.

Uh, I don’t know how to deal with this problem :frowning:


Please add information according to the instructions found here.
Could you also tell us how many tabs you have opened when you reconnect the network cable to the machine and how long it takes for the CPU usage to return to normal?

Thank you.

I have repaired registry and scanned virus and deleted User Data, but it was useless.
It is really strange that WHEN I PLUG THE INTERNET CABLE, one of dragon processes’ cpu go up to 100%, even the tab is ‘about:blank’.

-_- Help me

if you want help then please answer the questions you are asked.


At this point it looks like the issue is related to something on your system. If possible, we would like you to create a dump file for that dragon.exe process.
Please use Procdump to create the dump file (you can donwload the application from this location).

Before you go on with creating the dump file it would be best to do the following:

  • Right click Comodo Dragon’s shortcut and add the following command line switches in the “Target” field, after the target path: --disable-plugins --disable-extensions.
    • The information in the “Target” field should look like this: “C:\Program Files (x86)\Comodo\Dragon\dragon.exe” --disable-plugins --disable-extensions

To create the dump file you will have to:

  1. Launch Comodo Dragon.
  2. Press Shift+Esc on your keyboard to open the browser’s Task Manager window.
  3. Right click inside the Task Manager window and enable the Process ID column.
  4. Reproduce the hang scenario and identify the process which generates the high CPU usage.
  5. Create a dump file for the dragon.exe process.

I have attached an image with the steps for creating the dump file.

Thank you.

[attachment deleted by admin]

Just one tab or in new tab page. CPU will return to normal until I close Dragon.

Thank you. I have created a 144MB dmp file,then how to analyse it?

You’ll have to send it to us for analysis. You can do this by uploading it to an online file storage/sharing service like Comodo Cloud or 4shared and sending us the download link.

Thank you.

Thank you, this is

We didn’t find any problem in the provided dump.

Does this problem reproduces with the latest Dragon 20.1?
If it does please try the following steps:

  1. Disable all antivirus software.
  2. run Dragon with “–disable-extensions --disable-plugins” command line arguments.
  3. Disable “malware domain filtering” in dragon://chrome/settings/.

Thank you very much! Finally, I found that this problem related with comodo firewall.I disabled it and it worked well. I will check rules and try to solve the problem.
Thank you for your hard work.