In-process hosting with IIS Error:Could not open the lcu common library. The following files must be in the path described by the environment variable "PATH": icuuc50.dll, icudt50.dll,icuin50.dll

[Qiulin-Git]

I have placed the DLL in the project output folder，The Out-of-process hosting with IIS is running normally , But In-process hosting with IIS Error:Could not open the lcu common library. The following files must be in the path described by the environment variable "PATH": icuuc50.dll, icudt50.dll,icuin50.dll

[campersau]

What is the value of Directory.GetCurrentDirectory()? Depending on the aspnet core version you might need to use this: https://github.com/dotnet/aspnetcore/issues/4206#issuecomment-445612167

[huysentruitw]

Great suggestion of @campersau to check the current directory. I have ran this as in-process under IIS without issues (by having the SAP dll's together with all other .NET dll's of the project on the server).

A workaround could be to place the SAP dll's in C:\sap, add C:\sap to the systems PATH variable and restart IIS.

[Qiulin-Git]

There is no problem registering the DLL into the system , But I want to call DLL directly in the project output folder