All posts in category Exchange

Quicknote: Hybrid Exchange mailbox migration account vs. modern authentication policy

Recently, I came across an uncommon issue while disabling legacy authentication in a hybrid Exchange environment. Since I did not find any exact solutions, I thought I share my story about modern authentication in on-premises Exchange server and how it affects the mailbox migration account. Spoiler: it breaks the mailbox migration TL;DR– Exchange Online uses […]

by Daniel Kovacs on September 25, 2025 • Permalink

Posted in Exchange, Exchange Online

Posted by Daniel Kovacs on September 25, 2025

https://f12.hu/2025/09/25/quicknote-hybrid-exchange-mailbox-migration-account-vs-modern-authentication-policy/

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Quicknote: Hybrid Exchange mailbox migration account vs. modern authentication policy

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