What is hhctrl.ocx?

The hhctrl.ocx file is a file created by Microsoft with a description of “Microsoft HTML Help Control.” This file is an ActiveX file that enables a user to view their help interface in Microsoft Internet Explorer.

This file is located in the c:\windows\system32 or c:\winnt\system32 directory, also found in the c:\i386 directory.

Is this file a security threat?

This file is identified as a potential vector of attack. It has a vulnerability that could allow a remote attacker to access information on Windows 2000, XP, NT Server, and 2003 computer running Internet Explorer 6 SP1. If you’re running Internet Explorer 7 or later, and Windows is up-to-date, you should not be effected by this issue.

  • How to update a Microsoft Windows computer.
  • Full details about this security vulnerability.

Is this file a spyware, Trojan, or virus?

The hhctrl.ocx file included with Microsoft Internet Explorer is not spyware, a Trojan, or a virus. However, like any file on your computer it can become corrupted by a virus or trojan. Antivirus programs can detect and clean this file if it has become infected. Because this file is part of Internet Explorer users should never delete or remove this file if they think it is infected, let the antivirus program handle it.

Can I delete this file?

We do not recommend users delete this file. Deleting the file can cause issues with Internet Explorer. If you believe your computer is vulnerable to the above security threat, make sure Windows is up-to-date. Performing a Windows Update will probably correct this issue.

  • How to update a Microsoft Windows computer.
  • How to fix address range reserved by hhctrl.ocx for Windows System DLLs error.
  • Computer file extensions
  • See our file definition for further information and related links.
  • Microsoft Windows help and support.