09/01/2026
Passkeys Are Becoming the Default Sign-In for Microsoft 365: Microsoft is making passkeys the default sign-in method across Microsoft Entra, and is retiring Microsoft-provided SMS and voice-call verification. Passkeys become the default on September 1, 2026. Microsoft-provided SMS and voice are fully retired on February 1, 2027.
This is a platform change from Microsoft that applies to every Microsoft 365 tenant — it is not specific to your organization, and it is not something Fuse elected to do. What Fuse controls is the pace.
Fuse has applied Microsoft's temporary opt-out to the environments we manage. Your users will not be swept into the automatic September 1 change or start seeing unexpected passkey prompts that week. Instead, Fuse begins a coordinated rollout for your organization on Thursday, October 1, 2026 — announced, supported, and sequenced by department rather than sprung on your team mid-morning.
This article explains what is changing, what your users will see and when, how to register a passkey, and the one budget decision this creates.
What is changing
Two related changes are on the way, on two different dates:
http://dlvr.it/TVGFbs