Hi SAM_WIN 7,
o On which particular software are you facing this problem?
o Do you have Visual Basic installed?
I’d not recommend downloading from third party website as there are many potential threats associated with it.
Here are two steps you may try.
Step 1: Re-register the component.
Verify if comctl32.ocx is in C:\windows\system32 folder. If you, you may try re-registering the file.
1. Go to start and type cmd.
2. Right-Click on cmd and select “Run as Administrator”.
3. Type regsvr32 comctl32.ocx and press Enter.
If successful you should get a popup saying "DllregisterServer in
comscl32.ocx succeeded"
Explanation of Regsvr32 usage and error messages
http://support.microsoft.com/kb/249873
Step 2: Un-install and reinstall the software.
Re-installing helps in installing the missing component. Do this as a last resort.
For your reference:
Uninstall or change a program
http://windows.microsoft.com/en-US/windows7/Uninstall-or-change-a-program
Regards,
Shinmila H - Microsoft Support
Visit our Microsoft Answers Feedback Forum and let us know what you think.