Unable to send the domain_hint with Blazor web assembly (using MSAL JS)

[singhnishant40]

Issue reference: https://stackoverflow.com/questions/63605653/is-there-a-way-to-supply-a-domain-hint-for-single-sign-on-using-msal-net-on-a-bl

[umlaufa1]

FYI, domain_hint is a AuthenticationParameter of MSAL, which does not appear to be supported/exposed by the Microsoft.Authentication.WebAssembly.Msal package

Here are related issues for other Authentication parameters:
extraQueryParameter: #25391 (#25391)
loginHint: #19877 (#19925)

[szalapski]

Yes, this is important to us. Users get a suboptimal experience without it.

[szalapski]

Would you be willing to prioritize it somewhat? It definitely affects UX and so should be considered.

[umlaufa1]

I am just an early adoptor looking to use Blazor for a project in my business. You independently ran into this issue at the same time I did. The lack of Domain Hint and other MSAL parameters is a big drawback because it prohibits a rich login UI (which is one of the first things users see). Blazor is awsome and the dev community is great too. You may want to consider posting this issue under dotnet/aspnetcore where it might receive more attention.

[mkArtakMSFT]

Thanks for contacting us.
We plan to add documentation describing how to make customizations to the underlying MSAL.js library. You can find the pending PR at: dotnet/AspNetCore.Docs#21236