1. Please go to Event Viewer, click Applications and see if any error is logged. 2. It seems that the MSCOMCTL.OCX isn’t correctly registered or that it isn’t compatible with your Windows. Please open a Command Prompt and run as Administrator, then type the following command: Regsvr32 MSCOMCT2.OCX If you are using Window7 64bit, try typing:
Possible fixes for MSCOMCT2.OCX errors. Reinstall the installation that requires MSCOMCT2.OCX. Update the at application to the latest version. Install only available Windows updates. Download and install MSCOMCT2.OCX.
It looks like MSCOMCTL.OCX is not registered properly or may not even be compatible with Windows. Please open command prompt and run as administrator. Then type the following command: If this particular problem persists, download the new MSCOMCTL.OCX and unregister it.
Typically, these are post-installation steps related to registering the mscomct2.ocx file. First we need Microsoft to download each of our mscomct2.ocx files by clicking on the link on this website. Then unzip this file and place it in C:\Windows\SysWOW64 (for 64-bit version) or additionally (for 32-bit version c:\windows\system32).
How do I register MSCOMCT2 OCX and Mscomctl OCX?
You often need to copy the MSCOMCT2. Only the OCX file is not c:\windows\sysWOW64 c:\windows\system32. You can then register the product by running a Swift command or by running the regsvr32 boot selector c:\windows\sysWOW64\mscomct2. ocx and it must be registered, but make sure your company is using regsvr32 with boss privileges.
How do I fix mscomct2 OCX error?
Solution
- View http://activex.microsoft.com/controls/vb6/mscomct2.cab.
- Save the MSCOMCT2.CAB file to your local drive. < li> Double-click image of MSCOMCT2.CAB to deploy it.
- Extract MSCOMCT2.OCX to save time on %windir%\System32.
- Open a command prompt.
- Type REGSVR32 MSCOMCT2.OCX.
What is the runtime error 339 mscomct2.ocx?
Runtime Error 339: MSCOMCT2.OCX definitely not registered properly. The MSCOMCT2.OCX file is missing or corrupted. Failed to load module ‘MSCOMCT2.OCX’. Make sure the binary is stored in a readable path, or debug it to find problems with binary dependent DLLs.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.