General discussion

Can't delete certain Comodo Internet Security registry files

I only installed the CIS firewall and not the other features on my pc. After I uninstalled it in "Programs and Features", I can't delete registry entries labeled DeviceDesc. When I go to Permission to get Full Control for Everyone, I get an error message, "Unable to save permission changes on 0000. Access is denied". I attempted to delete the entries in Safe Mode too, but I received the same error message.

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Reply to: Can't delete certain Comodo Internet Security registry files
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Harv, if that is a driver of Comodo firewall..

you can try to uninstall using Device Manager.

Go to Hardware and Sound Control Panel > Device Manager.
Next, click View menu then select "Show hidden devices"
Expand "Non-plug and play devices"
Locate the comodo driver you want to remove.
Right-click to uninstall.

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"Non-plug and play devices" not shown in "hidden devices"

Donna, I went to Control Panel>Device Manager, etc. and there's no "Non-plug and play devices" listed.

One registry entry I couldn't delete looks like this:

LEFT side of screen: LEGACY_CMDGUARD

RIGHT side of screen: DeviceDesc REG_SZ Comodo Internet Security Sandbox Driver

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Harv, did you select...

"Show hidden devices"? In Device Manager, click "View" then select "show hidden devices". The non-plug and play devices should appear. If it won't display the hidden devices, try another method:

Make sure Comodo service is gone. Type services.msc in run box, locate any Comodo services. Stop it, if exist. Close the services console.
Try now to delete the registry keys for Comodo. Find:

Delete the keys. But ensure to create a backup of your registry before deleting anything.

But I suggest to first try to show hidden devices in Device Manager.

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Registar Registry Manager deleted all LEGACY entries

When searching internet, I found that someone was having a similar problem with LEGACY registry entries. An application named Registar Registry Manager ( was suggested to remove them and it worked like a charm.

Thanks for your help, Donna.

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(NT) Cool. Good to hear this, Harv.

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