How to Delete a BHO From Internet Explorer

BHO, which stands for Browser Helper Object, is an extension or plug-in that add functionality and additional features. Toolbars and search assistants work as BHOs, but some viruses disguise themselves as BHOs. A virus BHO will display in the antivirus report after a full antivirus system scan, along with its CLSID, a registry key that corresponds with a BHO. The key must be deleted from the registry in order to delete a BHO from Internet Explorer.

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Delete BHO in Computer Registry

Step

Type "regedit" (without quotes) from the Search pane.

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Double-click on the "Registry Editor" icon.

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Double-click on the "HKEY_LOCAL_MACHINE" folder.

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Double-click "Software," "Microsoft," "Windows," "CurrentVersion" and "Explorer" folders.

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Double-click the "Browser Helper Objects" folder to reveal a list of available objects.

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Record the BHO's CLSID key. An example of a CLSID key is {F02B00B3-A88C-4EF1-98FE-557F1DAF6E4D}.

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Right click on the CLSID key of the BHO you want to remove.

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Select "Delete" from the drop-down menu.

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Double-click on the "HKEY_CLASSES_ROOT" folder, located on the left pane.

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Double-click the "CLSID" folder.

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Right-click on the CLSID key, which should be the identical key found in the "Browser Helper Objects" folder.

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Select "Delete" from the menu list to remove the key.

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Close the Registry Editor.

Changing Internet Explorer Settings

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Open a new Internet Explorer window.

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Click "Tools" and select "Internet Options".

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Click the "Advanced" tab.

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Click "Restore advanced settings."

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Click the "Reset" button next to "Reset Internet Explorer Settings." Click "Apply" to confirm your changes.