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Migrating from Legacy to Modern Authentication
Hi all, I apologise if this doesn't question doesn't belong here, but this was where I was directed here by MS Support and the Office 365 forum. We are looking at disabling Legacy Authentication an...
- 1. has already been answered by Paul. AAD signin is the answer, you could create fancy workbooks - https://techcommunity.microsoft.com/t5/azure-active-directory-identity/new-tools-to-block-legacy-authentication-in-your-organization/ba-p/1225302
2. when you enable modern auth, there isn't anything that breaks. Users might get a different authentication prompt in Office apps though
3.When you disable legacy auth, apps that don't support modern auth will stop working indeed
If you look at you user sign ins over the last 30 days in the Azure portal you can filter by access using legacy auth clients.
If you disable legacy auth, access won't be granted to anything using those clients, i.e native Android mail client to access Exchange Online will stop.
