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Monday, November 27, 2023

Azure ACS retirement in Microsoft 365

As part of this evolution of Microsoft 365 solutions we will be retiring the use of Azure ACS for SharePoint Online auth needs and believe Microsoft 365 customers will be better served by modern auth offered via Microsoft Entra ID. Azure ACS will stop working for new tenants as of November 1st, 2024 and it will stop working for existing tenants and will be fully retired as of April 2nd, 2026. To learn more about the provider hosted Add-In use case please check out the respective retirement articles, granting applications access to SharePoint Online will need to be transitioned to Microsoft Entra ID. Azure ACS usage by SharePoint Server. Project Online is an extension on top of SharePoint Online and Project Online custom developments could also have used Azure ACS. The retirement of Azure ACS applies to Project Online as well, any Azure ACS usage in Project Online will follow the same retirement path as Azure ACS usage in SharePoint Online. To understand if your organization is using Azure ACS or begin planning transition to Microsoft Entra ID, we recommend that customers run the Microsoft 365 Assessment tool to scan their tenants for Azure ACS usage. Identify all used Azure ACS application principals with their key properties such as permission scopes and whether app-only was allowed or not For each identified Azure ACS application principal see a list of all sites that can be accessed via the Azure ACS application principal. Using the Azure ACS Report along with site information, tenant administrators together with developers can plan the transition of Azure ACS to Microsoft Entra ID as authentication model. We recommend tenant admins to turn off the usage of Azure ACS app-only access once they've ensured there is no business relevant Azure ACS usage anymore. -------------------- Read more at Source: Microsoft Tech Community SharePoint Blog

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