Thanks, the c library is in fact included in the Phidget22 package. Microsoft.OpenApi.dll localhost.pfx Newtonsoft.Json.dll runtimes Phidget22.NET.dll web.config root@SandboxHost-637853704456090895:/app# cd dll root@SandboxHost-637853704456090895:/app/dll# ls x64 x86 root@SandboxHost-637853704456090...