Mandatory parent window handle configuration for WAM authentication

6/10 Medium

Starting with MSAL 4.52+, developers must explicitly specify parent window handles using WithParentActivityOrWindow APIs for Windows broker (WAM) authentication. Omitting this causes poor UX where auth windows hide behind the application, and window inference is no longer feasible.

MSALWindows brokerWAM
Category
config
Workaround
partial
Stage
build
Freshness
persistent
Scope
single_lib
Upstream
open
Recurring
No
Buyer Type
team
Maintainer
active

Sources

Collection History

Query: “What are the most common pain points with MSAL for developers in 2025?”4/7/2026

It is now mandatory to tell MSAL the window the interactive experience should be parented to, using WithParentActivityOrWindow APIs. Trying to infer a window is not feasible and in the past, this has led to bad user experience where the auth window is hidden behind the application.

Created: 4/7/2026Updated: 4/7/2026