Microsoft Edge: Retiring legacy sign-in implementation on Windows

MC1490911 · published Oct 7, 2026 · 0 comments

Microsoft Edge on Windows will retire its legacy direct-WAM sign-in in version 157, fully adopting the OneAuth library to standardize authentication. Rollout starts and completes in November 2026. Admins should identify unmigrated profiles, test transitions, and prepare for possible user sign-in prompts.