Windows 8 and 8.1 Forums


cannot register MSCOMCTL.OCX

  1. #1


    Posts : 109
    XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10

    cannot register MSCOMCTL.OCX


    Hi there. Have been trying to install a network printer, Konica-Minolta MC5430DL under Windows 8, 64bit. The setup starts, but asks for a file MSCOMCTL.OCX. After looking up this problem online, I find conflicting reports about it having to be in SYSWOW64. Others say in System32. Either way, the system refuses to register it, giving me the same error message in both cases. 'May not be compatible with the version... check to see if compatible with x86 or x64, etc. etc.' Any ideas? This is a network printer, and I didn't run into these problems installing it on a machine running Windows 7 64bit. Thanks in advance for any help.

      My System SpecsSystem Spec

  2. #2


    Posts : 2,130
    Windows 8.0 x64


    Did you open an elevated command prompt in the SysWow64 directory and have the ocx in that same directory? If so and it still did not work check your path starts with .(dot) so that the current directory is searched first. Or type in the full path to both regsvr32.exe and the ocx file.

    That's the only thing that occurs to me at the moment. Unless the ocx is 16 bit. If so it won't run except maybe in DosBox.
      My System SpecsSystem Spec

  3. #3


    Posts : 109
    XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10


    Thanks, MilesAhead. Did that, opened CMD as Administrator, and I was in the SysWow64 directory, where the file is located.
      My System SpecsSystem Spec

  4. #4


    Posts : 2,130
    Windows 8.0 x64


    On my system it shows both a 32 bit and 64 bit regsvr32.exe. You sure it ran the right one?

    The other thing would be to run the ocx through something that tells the "bitness."

    Edit: btw, what exactly is the error msg?
      My System SpecsSystem Spec

  5. #5


    Posts : 109
    XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10


    Thanks. Didn't know until I read your message that there are 2 regsvr32. I checked it out. One is for 32bit the other for 64bit. Nonetheless, after trying that, I am still at a loss of registering that file. As said in my original post, the error message is, in each case the same:
    'May not be compatible with the version of your system. Check to see if compatible with x86 or x64, etc. etc.'
      My System SpecsSystem Spec

  6. #6


    Posts : 2,130
    Windows 8.0 x64


    It sounds like the ocx is 16 bit. If you have a 64 bit Windows it won't run. You have to run a 16 bit emulator such as DosBox to use it in Windows x64.
      My System SpecsSystem Spec

  7. #7


    Posts : 109
    XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10


    Well, I downloaded mscomctl.ocx directly from Microsoft. It registered. But I keep running into dead ends. The install program for the printer only goes so far then just stalls with no error message. This printer installs on all other PCs (Windows 8, Windows 7) in our network, except on this one. The printer is a Konica-Minolta MC5430DL. I got the latest install program from Konica, for Windows 8 64bit. Well, that particular program starts by listing all the machines connected to the network, except for the printer. And yet when you enter the network address in the browser, it goes straight to it. Giving up...
      My System SpecsSystem Spec

  8. #8


    Posts : 2,130
    Windows 8.0 x64


    The printer manufacturer probably has a forum. I would ask there as you never know what you might find out. As example I had HP desktop machines that kept locking up. I could not find any fan control in the BIOS. I put a question on HP Business forum. Turns out there was an Easter Egg key combo to open a BIOS page with the fan speed control. I never would have found it anywhere else.
      My System SpecsSystem Spec

  9. #9


    Posts : 109
    XP, Vista, Windows 7, Windows 8/ 8.1, Windows 10


    Thanks for the tip, but I did that, days ago, and they haven't responded. Konica-Minolta is just not a top of the line printer.
      My System SpecsSystem Spec

cannot register MSCOMCTL.OCX
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