Access Denied starting ComObject

[CarteKiwi]

Hello Simon,

Thanks for this great work ! Exactly what I was looking for right now :)

I was not able to use regsvr32 as you said: regsvr32 VCamNetSampleSource.dll (that was raising an error "DllRegisterServer not found")

Had to call it on the ComHost file: regsvr32 VCamNetSampleSource.comhost.dll

But, I now get an "access denied" when instantiating camera in Main.cs of client app. hr = _camera.Object.Start(null);

Any idea ? I'm on Windows 11

Thanks

[smourier]

Hi,

Aw... of course you need to register the comhost.dll (this was an incorrect copy paste from the native version https://github.com/smourier/VCamSample)

As for the access denied, it's probably the same issue as for the native version https://github.com/smourier/VCamSample/issues/1

Here is a summary:

• The COM object that serves as a Virtual Camera Source (here VCamNetSampleSource.comhost.dll) must be accessible by the two Windows 11 services Frame Server & Frame Server Monitor (running as svchost.exe).
• These two services usually run as Local Service & Local System credentials respectively.
• If you compile or build in a directory under your compiling user's root, for example something like C:\Users\<your login>\source\repos\VCamNetSample\VCamNetSampleSource\bin\Debug\net8.0-windows10.0.22621.0 or somewhere restricted in some way, it won't work since these two services will need to access that.

=> So the solution is just to either copy the output directory once built (or downloaded) somewhere where everyone has access and register VCamNetSampleSource.comhost.dll from there, or copy/checkout the whole repo where everyone has access and build and register there.

[CarteKiwi]

Crystal clear :) It's working now. Thanks for your prompt reply !