Using IdWeb token acquisition on ASP.NET Core 2.x on net472 or net48 lacks implementation of ITokenAquirerFactory

[jmprieur]

Microsoft.Identity.Web Library

Microsoft.Identity.Web

Microsoft.Identity.Web version

2.17.0

Web app

Not Applicable

Web API

Not Applicable

Token cache serialization

Not Applicable

Description

on ASP.NET Core 2.x on net472 or net48 customers can add token acquisition as a singleton, but the implementation of ITokenAcquireFactory is missing

Reproduction steps

In Startup.cs:

services.AddTokenAcquisition(true);

In controller:

  IDownstreamApi d = HttpContext.RequestServices.GetService(typeof(IDownstreamApi)) as IDownstreamApi;

Error message

provokes: missing implementation for ITokenAcquireFactory

Id Web logs

No response

Relevant code snippets

See above

Regression

No regression

Expected behavior

The ITokenAcquirerFactory shouldn't be missing.