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:
THE MODULE ‘MSCOMTRL.OCX’ WAS LOADED BUT THE CALL TO DLLREGISTERSERVER FAILED WITH ERROR CODE 0X8002801C