SOLVED: MSCOMCTL.OCX Download & Register on 64 Bit Windows

If you are working for an old application you may be presented with the error:

Component ‘MSCOMCTL.OCX’ or one if its dependencies not correctly registered: a file is missing or invalid:


In this case you have two tasks to complete and neither of them are obvious:


MSCOMCTL.OCX is part of Visual Basic 6 Package and you can download directly from Microsoft HERE then extract it using a tool like 7 Zip.  Alternately you can just download the MSCOMCTL.OCX directly from us HERE.


You need to know if you are using a 32bit or 64bit version of Windows and because this is not 2002, we are assuming you want to install it on a 64bit PC.  If you try to register MSCOMCTL.OCX (which is 32 bit) on a 64 bit system and you put it in the typical C:\WINDOWS\SYSTEM32 folder you will get:


  1. dllregisterserver-in0mscomctl.ocx-succeededIf you are using 64 bit Windows copy the MSCOMCTL.OCX to C:\WINDOWS\SYSWOW64
    (If you are using 32 bit Windows copy MSCOMCTL.OCX to C:\WINDOWS\SYSTEM32)
  2. Open a CMD or PowerShell prompt (as an administrator) and change into C:\WINDOWS\SYSWOW64
  3. Type

    regsvr32 mscomctl.ocx

  4. Press ENTER
  5. Enjoy


  1. Avatar
    Henry April 5, 2019 at 4:03 am

    Thank you for reminding me of how to do this. It has been a while since I have had to do this and my memory is not what it used to be. Again, THANK YOU.

  2. Avatar
    Edward Almenar March 19, 2019 at 2:41 pm

    Great tutorial as a non IT expert I struggle a little bit to open the CMD as administrator then to change the directory, in order to improve it, I would sugest you to explain to the user how to open the CMD as administrator and after that explain that they need to type cd C:\WINDOWS\SYSWOW64 in order to chahe it form the default C:\WINDOWS\SYSTEM32) after we managed to open the CMD as administrator.

    Is just my personal recommendation; Im really thankful beacause based on your tutoril I managed to fix my problem and now the program that I need to see open correctly.

  3. Avatar
    Victor Ávila Arruda March 13, 2019 at 6:40 pm


  4. Avatar
    Matt March 11, 2019 at 7:50 am

    Great, worked with the app that required it! Thank you!

  5. Avatar
    Sideral February 27, 2019 at 5:28 pm

    Thank you Ian, it worked, anyway to trust 100% I want to try on some programs.

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