The module "mscomctl.ocx" was loaded but the call to DllRegisterServer failed with error code 0x80004005

Question

_{Saturday, December 16, 2017 7:40 PM | 1 vote}

A VB6 application which I developed a decade ago worked well on Windows XP thru 7, however when running it on Windows 10, I receive the following error message:

"Component 'MSCOMCTL.OCX' or one of its dependencies not correctly registered: a file is missing or invalid339"

I have validated that the OCX file is located in the C:\WIndows\SysWOW64 folder and I tried to register it using the solution provided by user k.c.s. at:

https://answers.microsoft.com/en-us/windows/forum/windows_7-windows_programs/mscomctlocx-dependency-error-attempting-to-install/f96acaa3-90d7-437a-a9cc-9130eb17fdb4

However, when I try the solution, which is to execute a command using regsvr32 in the command prompt (using admin privileges) I get the following error message (see pic below):

The module 'mscomctl.ocx' was loaded but the call to DllRegisterServer failed with error code 0x80004005

I am desperate for help to solve this problem. As a side note, I first reported this issue in the Microsoft Community and the full thread can be found here.

Thank you.

Hrair Kerametlian

All replies (2)

_{Saturday, December 16, 2017 10:48 PM | 1 vote}

from your screenshot: you are calling regsvr32 from the system32 folder, and not from the SysWow64 folder.
The article you linked to states:

cd<push spacebar>C:\Windows\SysWOW64 <push Enter key>
The prompt should change to:  C:\Windows\SysWOW64
Then type:
regsvr32<push spacebar>mscomctl.ocx <push Enter key>

---

_{Monday, December 18, 2017 8:48 AM}

Hi Hrair K,

Firstly, right click CMD and run as admin to check.

Also you could follow the steps below to check it.

module c:\windows\syswow64\mscomctl.ocx was loaded but the call to DLLRegisterServer

http://www.vbforums.com/showthread.php?719985-RESOLVED-module-c-windows-syswow64-mscomctl-ocx-was-loaded-but-the-call-to-DLLRegisterServer

Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

Hope it will be helpful to you

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