Microsoft retires SMS and voice MFA on 1 February 2027. That is 121 days away. What actually qualifies
Yubico
USB-C · NFC
The 5C NFC in a NIST-validated build, for obligations that name FIPS 140-2. Check which validation yours requires before ordering.
“We engaged IronSights to help secure our Microsoft 365 environment, and the results have been outstanding. From start to finish, the process was handled with professionalism, clear communication, and deep technical expertise. The assessment gave us clarity on our risks and a practical path forward.”
Andrew, Technical Architect & CTOTechnology ConsultancyA client whose Microsoft 365 we secureBuying for a team? We advise on which key fits and run the rollout, enrolment and Conditional Access included. Talk to us.
YubiKey 5C NFC FIPS (140-2) connects over USB-C. It also works over NFC, so the same key taps against a phone.
Government, defence and regulated buyers whose control set names FIPS 140-2 validated authenticators.
Where it is the wrong choice: anyone without a FIPS obligation, or whose obligation names 140-3. The standard 5C NFC is the same key for less.
Every order ships from Sydney with a tax invoice, and we are happy to talk through a rollout before you commit to a quantity.
