*For this entry exists the more relevant or more recent entry MC898388
check before: 2023-12-12
Product:
Azure Active Directory, Entra, Entra ID, Microsoft 365 Apps, SharePoint
Platform:
Developer, Online, World tenant
Status:
Change type:
Admin impact, Retirement, Updated message, User impact
Links:
Details:
Summary:
Azure ACS for SharePoint Online will retire on April 2, 2026. New tenants cannot use it after November 1, 2024. Organizations must migrate custom apps to Microsoft Entra ID for secure authentication and use the Microsoft 365 Assessment tool to identify Azure ACS usage.
Details:
Updated October 3, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 6 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online.
[Key Points:]
Major: Retirement
Timeline:
Starting November 1st, 2024, new tenants will not be able use Azure ACS.
Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants.
Action: Review and assess impact
Change Category:
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Scope:
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Release Phase:
Created:
2023-11-28
updated:
2025-10-03
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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additional Info URL
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Direct effects for Operations**
- Impact on IT Operations
- Disruption in access to SharePoint Online customizations for applications relying on Azure ACS post-retirement.
- Roles impacted: IT Operations Managers, System Administrators
- Reference: [Microsoft Support Update](https://aka.ms/retirement/acs/guidance)
- Impact on IT Services
- Need for migration to Microsoft Entra ID, which may require downtime or service interruptions during the transition period.
- Roles impacted: Service Delivery Managers, Application Support Teams
- Reference: [Microsoft Entra ID Overview](https://learn.microsoft.com/en-us/azure/active-directory/develop/)
- Impact on IT Users
- Users may experience loss of functionality or access to custom applications integrated with SharePoint Online if not transitioned in time.
- Roles impacted: End Users, Business Analysts
- Reference: [Microsoft 365 Assessment Tool](https://aka.ms/assessment/addinsacs)
- Impact on IT Administrators
- Increased workload for administrators to assess current Azure ACS usage, plan migration strategies, and update training materials.
- Roles impacted: IT Administrators, Training Coordinators
- Reference: [Migration Guidance](https://learn.microsoft.com/en-us/azure/active-directory/develop/)
- Dependencies and Interdependencies
- Custom applications and third-party solutions that depend on Azure ACS will need to be evaluated and potentially re-engineered to work with Microsoft Entra ID, affecting project timelines and resource allocation.
- Roles impacted: Project Managers, Solution Architects
- Reference: [Transitioning to Microsoft Entra ID](https://aka.ms/retirement/acs/guidance)
Opportunities**
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Potentional Risks**
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change history
| Date | Property | old | new |
| 2025-10-03 | MC Messages | Updated June 2, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 10 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact | Updated October 3, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 6 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact |
| 2025-10-03 | MC Last Updated | 06/03/2025 00:23:12 | 2025-10-03T16:46:51Z |
| 2025-10-03 | MC Summary | Azure ACS in Microsoft 365 will retire on April 2, 2026. New tenants cannot use Azure ACS starting November 1, 2024. Organizations should transition to Microsoft Entra ID for SharePoint Online customizations. Admins should notify users, update training, and use provided tools and guidance for migration. | Azure ACS for SharePoint Online will retire on April 2, 2026. New tenants cannot use it after November 1, 2024. Organizations must migrate custom apps to Microsoft Entra ID for secure authentication and use the Microsoft 365 Assessment tool to identify Azure ACS usage. |
| 2025-06-03 | MC Messages | Updated February 1, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 14 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact | Updated June 2, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 10 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact |
| 2025-06-03 | MC Last Updated | 01/31/2025 23:36:19 | 2025-06-03T00:23:12Z |
| 2025-06-03 | MC Summary | Azure ACS will retire on April 2, 2026, affecting SharePoint Online customizations. Microsoft recommends transitioning to Microsoft Entra ID for authorization. Key dates include November 1, 2024, for new tenants and April 2, 2026, for existing tenants. Organizations should prepare by updating training and using the Microsoft 365 Assessment tool. | Azure ACS in Microsoft 365 will retire on April 2, 2026. New tenants cannot use Azure ACS starting November 1, 2024. Organizations should transition to Microsoft Entra ID for SharePoint Online customizations. Admins should notify users, update training, and use provided tools and guidance for migration. |
| 2025-02-01 | MC Messages | Updated April 12, 2024: This update serves as a reminder regarding the upcoming retirement scheduled for April 2, 2026.
Since the first use of Azure ACS (Access Control Services) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact | Updated February 1, 2025: This update serves as a reminder that Azure ACS in Microsoft 365 will retire and stop working in 14 months from now (April 2, 2026).
Since the first use of Azure Access Control Services (ACS) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact |
| 2025-02-01 | MC Last Updated | 04/12/2024 23:05:11 | 2025-01-31T23:36:19Z |
| 2024-04-13 | MC Messages | Since the first use of Azure ACS (Access Control Services) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online.
[Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2nd, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact | Updated April 12, 2024: This update serves as a reminder regarding the upcoming retirement scheduled for April 2, 2026.
Since the first use of Azure ACS (Access Control Services) by SharePoint in 2013, Microsoft has evolved the authorization and authentication options for SharePoint Online via Microsoft Entra ID (a.k.a. Azure AD). Using Microsoft Entra ID as auth platform for your SharePoint Online customizations will provide your applications the most secure, compliant and future proof model. With our continued investment in Microsoft Entra ID, Microsoft is retiring the use of Azure ACS as auth platform for SharePoint Online. [Key Points:] Major: Retirement Timeline: Starting November 1st, 2024, new tenants will not be able use Azure ACS. Starting April 2, 2026, Microsoft will remove the ability use SharePoint ACS for existing tenants. Action: Review and assess impact |
| 2024-04-13 | MC Title | Azure ACS retirement in Microsoft 365 | (Updated) Azure ACS retirement in Microsoft 365 |
| 2024-04-13 | MC Last Updated | 11/28/2023 00:29:18 | 2024-04-12T23:05:11Z |
| 2024-04-13 | MC MessageTagNames | User impact, Admin impact, Retirement | Updated message, User impact, Admin impact, Retirement |
| 2024-04-13 | MC Summary | Azure ACS will retire on April 2, 2026, affecting SharePoint Online customizations. Microsoft recommends transitioning to Microsoft Entra ID for authorization. Key dates include November 1, 2024, for new tenants and April 2, 2026, for existing tenants. Organizations should prepare by updating training and using the Microsoft 365 Assessment tool. |
Last updated 2 months ago ago
