Merge pull request #191415 from grtaylor806/patch-1

Update block-legacy-authentication.md

Author: PRMerger17

articles/active-directory/conditional-access/block-legacy-authentication.md

@@ -16,7 +16,7 @@ ms.collection: M365-identity-device-management
 To give your users easy access to your cloud apps, Azure Active Directory (Azure AD) supports a broad variety of authentication protocols including legacy authentication. However, legacy authentication doesn't support multifactor authentication (MFA). MFA is in many environments a common requirement to address identity theft. 
 
 > [!NOTE]
-> Effective October 1, 2022, we will begin to permanently disable Basic Authentication for Exchange Online in all Microsoft 365 tenants regardless of usage, except for SMTP Authentication.
+> Effective October 1, 2022, we will begin to permanently disable Basic Authentication for Exchange Online in all Microsoft 365 tenants regardless of usage, except for SMTP Authentication. Read more [here](/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic-authentication-exchange-online)
 
 Alex Weinert, Director of Identity Security at Microsoft, in his March 12, 2020 blog post [New tools to block legacy authentication in your organization](https://techcommunity.microsoft.com/t5/azure-active-directory-identity/new-tools-to-block-legacy-authentication-in-your-organization/ba-p/1225302#) emphasizes why organizations should block legacy authentication and what other tools Microsoft provides to accomplish this task: