Unable to load DLL 'libmagic-1' or one of its dependencies(HRESULT: 0x8007007E)

[dro-sh]

I have an app based on ASP.NET Core 2.1. At localhost all works fine. But than I published my app I got the problem described at title. At my publication folder I found "labmagic-1.dll" at "\runtimes\win-x64\native". I set "MimeGuesser.MagicFilePath" at absolute and relative path. But didn't help.

[hey-red]

You are using self-contained deployment? You should place all files from \runtimes\win-x64\native into output directory.

[dro-sh]

You mean place it to root of app? If I place files to root I have next problem:

BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)

Am I need install net core sdk 2.0 to my server?

[hey-red]

Hmm interesting. You are publish through visual studio or command line? What OS? Is x64 windows?

Am I need install net core sdk 2.0 to my server?

You can install only .net core runtime or full sdk(the runtime is included). Also, see https://docs.microsoft.com/en-us/dotnet/core/deploying/index

[dro-sh]

Yes, I'm using VS and Web Deploy to publish to my windows server 2016(x64). I determine images mime type due to your lib. Also I use SkiaSharp to resize images. Also it isn't work (libskiasharp.dll not found). I thought that there was not enough net core 2.0 on the server. Then I uninstall net core 2.0 in my dev comp. All works on dev comp on localhost publication.

P.S. Installation runtimes SDK didnt' help.

[hey-red]

Ok. You can show your "publish" directory? Its contains "runtimes" dir?

[dro-sh]

Yes, it contains "runtimes" and "libmagic-1.dll" next.

[cguillencr]

When I published my project using dotnet cli sudo dotnet publish AA.csproj -c Release -r ubuntu.14.04-x64

The file magic.mgc is been created inside the published folder, but for some reazon only linux was not able to see it. Thats why I place this code in the startup of my mvc project .

    if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
            {
                MimeGuesser.MagicFilePath = "magic.mgc";
            }

Run find / -name magic.mgc to verify the .mgc file is inside the proper folder you may use the absolute path as well.

Watch out if you face this error MagicException: File 5.30 supports only version 14 magic files./usr/share/file/magic.mgc' is version 10` Means that I must upgrade linux o downgrade Mime version in your Nuget.

I my case the project was published and tested in ubuntu18 sudo dotnet publish AA.csproj -c Release -r ubuntu.18.04-x64

[shazha]

same problem here. have you found a fix or workaround, @Serfi7 ?

[dro-sh]

I didn't do anything. But not it works fine. @shazha