The VideoLAN Forums

I tried adding the VLC control to a vb.net project, but it says axvlc.dll isn't registered. I tried registering it with Regsvr32.exe, and it said it worked, but I still can't add it to my vb.net project.

Do you use the right platform? If you want to create a 32bit executable, you will need VLC 32bit.

I want the program to function in both 32 and 64 bit environments. Is there a Regsvr64.exe?

Then, VLC 32bit and VLC 64bit must be installed/registered at the same time.

You can use regsvr32.exe for both.

VLC 32-bit is installed. I don't know where to get VLC 64-bit.

You can download it here:
http://get.videolan.org/vlc/2.2.1/win64 ... -win64.exe
But caution, the latest installed VLC platform (in this case the 64bits version) will be the main installation, because the installer will overwrite the file associations, desktop icons and start menu icons of the already installed VLC.

Thanks.

I installed the newest version, but it didn't make a difference.

Have you installed 32bit and 64bit at the same time?

Have you installed 32bit and 64bit at the same time?

I tried one at a time and both together. Neither worked.

Try to install 64bit VLC first and after that 32bit VLC (without uninstalling 64bit VLC), because the dll registration have currently a problem, if 64bit VLC will be installed after 32bit.

I have re-tested it and can confirm now your problem.
I also can't add the 64Bit plugin to Visual Studio, it doesn't appear in the list. And if I want to add it manually, it says "Error during self-registration".

I have created a trac ticket for this problem. (https://trac.videolan.org/vlc/ticket/16547)

As workaround, you can compile as x86, which will run on 32Bit and 64Bit systems, if VLC 32Bit is installed.

Ok, I think I know now the cause.

This behavior is by design. Visual Studio is a 32bit process, and therefore it can only load and execute 32bit modules.

Only if the 32bit module is available, it can also access to 64bit modules (Debugging in "AnyCPU" mode or compiling in "x64" mode).

So the 32bit module must be installed, too. Add the 32bits VLC to your project, and switch to "AnyCPU" or "x64". The 64bits plugin will be used automatically at this point.
(After compiling in "x64" mode, you should switch back to "x86" or "AnyCPU", because the forms designer will have problems after you reopen the project in "x64" mode.

It's now giving me another error: "Failed to create component 'AxHost'. The error message follows: 'System.Runtime.InteropServices.COMException (0x8004D73F): This is not a COM component."

Do you open the project in x86 compiler mode? If not, change the mode to x86 and reopen the project.
Visual Studio is really tricky if you also use 64Bit plugins...