Component 'COMCT332.OCX' or one of its dependencies not correctly registered: a file is missing or invalid.

Install the VB6 runtime from https://sourceforge.net/projects/vb6extendedruntime/

Yes. Error 339 usually means the old Samsung IT Tool is trying to use the Visual Basic 6 Common Controls ActiveX component COMCT332.OCX, but Windows cannot find or load it.

Because this is legacy Samsung software, I would troubleshoot it in this order.

1. Check whether the OCX already exists

Open Command Prompt as Administrator and run:

dir C:\Windows\System32\COMCT332.OCX
dir C:\Windows\SysWOW64\COMCT332.OCX

On a 64-bit Windows 10 system, the second location is particularly important because many old VB6 applications are 32-bit.

If the file is missing, do not simply download a random OCX from an unknown DLL-download website. Get COMCT332.OCX from the original Samsung IT Tool installation media/package or another trusted copy of the legacy application.

2. Register the 32-bit OCX

If the file is located in:

C:\Windows\SysWOW64\COMCT332.OCX

open Command Prompt as Administrator and run:

C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\COMCT332.OCX

You should receive:

DllRegisterServer in COMCT332.OCX succeeded.

Then restart the Samsung IT Tool and test it.

3. If registration says a dependency is missing

This is where the message:

"or one of its dependencies not correctly registered"

becomes important.

COMCT332.OCX is a VB6-era ActiveX control, so the application may also require the appropriate Visual Basic 6 runtime files and other legacy controls.

If the OCX is present but registration fails, don't keep copying/registering random OCX files. We need to identify the exact missing dependency.

4. Check whether your Windows installation is 64-bit

Run:

systeminfo | findstr /B /C:"System Type"

If it reports:

System Type: x64-based PC

use:

C:\Windows\SysWOW64\regsvr32.exe

for the 32-bit Samsung application.

This is a common source of confusion: on 64-bit Windows, System32 contains 64-bit system components, while SysWOW64 contains 32-bit components.

5. Recommended approach for this particular Samsung software

Since your goal is specifically to run the Samsung IT Tool to program the SVMi-4, I would avoid changing your Windows installation unnecessarily.

The preferred sequence is:

Samsung IT Tool
      ↓
COMCT332.OCX present?
      ↓
YES → Register with 32-bit regsvr32
      ↓
Registration succeeds?
      ↓
YES → Launch Samsung IT Tool
      ↓
NO → Identify missing VB6 dependency