I have this problem tring to build one solution
Task could not find \"AL.exe\" using the SdkToolsPath \"C:\\Program Files\\Microsoft SDKs\\Windows\\v7.0A\\bin\\NETFX
As I got this issue in VS2019 after a fresh install of both Windows and Visual Studio 2019 I thought it might be good to share:
Installing Microsoft.Net.Component.4.7.2.SDK from the Visual Studio installer fixed it for me!