Microsoft Is Finally Ending SMS Codes for Account Sign‑In — Passkeys Are Taking Over
Microsoft is officially moving away from SMS-based authentication — a change security experts have been urging for years. According to a new advisory from Microsoft, SMS codes will be phased out as a method for both sign‑in and account recovery, with the company stating that “SMS-based authentication is now a leading source of fraud.”
This shift marks a major milestone in the transition toward passwordless, phishing‑resistant authentication, with passkeys becoming the new default across Microsoft accounts.
Why Microsoft Is Retiring SMS Codes
Microsoft’s advisory makes the reasoning clear: SMS is no longer safe enough for modern threats. SIM‑swapping attacks have made it easy for criminals to hijack phone numbers and break into accounts — a problem security researchers have warned about for years.
Instead of offering a timeline, Microsoft emphasized that the “future of authentication is passwordless, secure, and user‑friendly.”
Passkeys: A More Secure Way to Sign In
Passkeys work very differently from passwords or SMS codes. Instead of typing something that can be stolen, a passkey uses two cryptographic keys — one stored on your device and one stored by the service.
When you sign in:
Your device proves it has the correct key
You authenticate using a fingerprint, face scan, or device PIN
The private key never leaves your device, making it resistant to phishing and data leaks
Microsoft says this move will help users “stay ahead of evolving threats while making account access simpler and more seamless.”
But Not Everyone Is Convinced
While passkeys are widely praised, researchers at SquareX warned in 2025 that browser‑based passkey workflows could be exploited. They demonstrated that attackers could potentially intercept passkey registration flows and fake authentication prompts.
This doesn’t make passkeys unsafe — but it highlights the need for continued improvements in browser security.
Why This Matters for Everyday Users
For most people, this change means:
No more waiting for SMS codes
No more worrying about SIM‑swapping
Faster, more secure sign‑ins
A smoother experience across Windows 11 and Microsoft services
And for businesses, it means fewer compromised accounts and fewer support tickets related to password resets or stolen SMS codes.
How to Prepare for the Transition
Here’s what I recommend for local users:
1. Add a Passkey to Your Microsoft Account
You can create a passkey using:
Windows Hello (fingerprint, face, or PIN)
A hardware security key
A supported mobile device
2. Update Your Recovery Email
Microsoft will rely more heavily on verified email for account recovery.
3. Remove Old Phone Numbers
If your number has changed, update it — or remove it entirely once passkeys are set up.
4. Strengthen Your Device Security
Because passkeys live on your device, keeping that device secure is essential.
Need Help Setting Up Passkeys?
I offer local support in Sherwood Park and Edmonton for:
Microsoft account security hardening
Passkey setup on Windows 10/11
Device PIN, fingerprint, and face‑ID configuration
Malware removal and account recovery
Full PC security audits
