I have followed this document verified the openiddict.pfx file exists in content folder of autherServer web
Thanks ! It does work by adding following Nuget package in ApiHost project <PackageReference Include="Microsoft.IdentityModel.Protocols.OpenIdConnect" Version="7.5.1" /> <PackageReference Include="Microsoft.IdentityModel.Tokens" Version="7.5.1" /> <PackageReference Include="Microsoft.IdentityModel.JsonWebTokens" Version="7.5.1" />