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Legacy authentication

Concept

Older sign-in protocols such as IMAP, SMTP and older Exchange ActiveSync versions that do not support multifactor authentication and can therefore be used to bypass MFA; blocking them is a common baseline Conditional Access policy.

✦ CONCEPTLegacy authenticationM365.FM
Title graphic: Legacy authentication (Concept)
TypeConcept

Articles about Legacy authentication (2)

Glossary

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Sources

Maintained by Mirko Peters (Microsoft MVP) · Last updated: