September 2026

SharePoint Online continues to evolve rapidly, particularly around administration, governance, security, AI, and content management. Over the past four months, Microsoft has introduced several changes that are important for SharePoint and Microsoft 365 administrators to understand.

From the new SharePoint Admin Agent and Authoritative Sites to changes in sharing, version history, home-site management, and the eventual retirement of classic SharePoint experiences, these updates point toward a more automated, governed, and AI-ready SharePoint environment.

Here are the key administrative changes that have occurred over the past four months that all administrators should know about.

1. SharePoint Admin Agent Brings AI to SharePoint Administration

One of the most significant developments is the SharePoint Admin Agent, introduced in May 2026.

The Admin Agent provides a conversational way for administrators to assess and manage aspects of their SharePoint environment. Rather than navigating multiple administration pages or writing PowerShell scripts for every task, administrators can ask questions in natural language and receive information about their SharePoint environment.

The agent is built on SharePoint Advanced Management and focuses on areas such as:

• Content readiness
• Site lifecycle
• Storage
• Oversharing
• Permissions
• Resiliency
• Microsoft 365 Backup
• Multi-Geo management

Microsoft has also introduced the SAM Admin role to provide appropriate access to sensitive file-level governance information.

The important change for administrators is not simply the introduction of another AI tool. It represents a shift toward conversational administration, where administrators can analyze their SharePoint environment and identify governance issues without relying exclusively on traditional administrative interfaces.

2. Authoritative Sites Improve Trusted Content in Copilot Search

Microsoft introduced SharePoint Authoritative Sites in August.

Administrators can designate specific SharePoint sites as authoritative sources. These sites can contain important organizational information such as policies, procedures, corporate communications, and official guidance.

Once designated, authoritative sites can receive greater priority in Copilot Search experiences.

For administrators, this creates a new governance consideration: which SharePoint sites should be considered official sources of organizational knowledge?

This is particularly important as organizations increasingly rely on Microsoft 365 Copilot and AI agents to find information.

Administrators should begin identifying high-value sites that contain trusted corporate information and consider whether they should be designated as authoritative.

3. SharePoint Home-Site Administration Moves into the SharePoint Admin Center

Microsoft also simplified the administration of SharePoint home sites.

Administrators can now create and designate a SharePoint communication site as a home site directly from the SharePoint admin center.

Previously, administrators used the Viva Connections management experience for this functionality.

The update also introduces:

• A Resources web part
• An Announcements web part
• Additional News web-part layouts
• Simplified configuration of the SharePoint app in Teams
• Updated branding around the SharePoint app in Teams

For SharePoint administrators, the biggest change is the consolidation of home-site management into the SharePoint administration experience.

4. A New SharePoint Experience Changes the Administrative Landscape

Microsoft has begun rolling out a redesigned SharePoint experience centered around three areas:

Discover, Publish, and Build.

The SharePoint home page is being replaced by a new Discover experience, while the SharePoint app bar is being refreshed with new destinations and navigation capabilities.

Microsoft describes the new experience as a foundation for AI-assisted creation and a more consistent SharePoint interface.

For administrators, this means SharePoint’s traditional navigation and user experience should not be treated as static. Organizations may need to review:

• Home-site configuration
• Global navigation
• Branding
• User communications
• Customizations
• SPFx solutions
• Training materials

Administrators should also test the new experience with their SharePoint stakeholders before broad organizational adoption.

5. New Sharing Experience Changes How Users Share Content

Microsoft is introducing a new Microsoft 365 sharing experience that also affects SharePoint Online.

The new experience is built around a reusable hero link that provides a more unified way to share content and manage access.

The change is designed to simplify sharing while making permissions easier to understand and manage.

For SharePoint administrators, this is an important governance change because sharing behavior is closely connected to information security. Administrators should review their organization’s existing sharing policies and prepare users for changes to the sharing interface and workflow.

6. Version History Administration Continues to Become More Granular

Microsoft has expanded administrative control over SharePoint version history.

Administrators can now establish version-history policies at different levels, including the organization and individual site. Site-level policies can be applied to new libraries, existing libraries, or both, depending on the administrative requirement.

This provides administrators with greater control over the balance between:

• Data recovery
• Storage consumption
• Compliance requirements
• Business requirements

Microsoft also provides PowerShell capabilities for managing version-history policies and processing existing libraries. Some operations run asynchronously and can take time to complete.

For administrators, this is an area worth reviewing because uncontrolled version history can contribute significantly to SharePoint storage consumption.

7. SharePoint Change History Reports Improve Administrative Visibility

Another useful administrative capability is Change History Reports.

SharePoint administrators can create reports showing site actions and organization-setting changes made during the previous 180 days.

Reports can identify:

• What changed
• When the change occurred
• Who initiated the change

The reports cover a growing number of SharePoint and OneDrive administrative settings, including site creation, storage, notifications, version-history limits, external sharing, and sharing-link configuration.

This provides administrators with a better way to investigate unexpected configuration changes and maintain an audit trail of administrative activity.

8. Microsoft Announces the Retirement of Classic SharePoint Experiences

Perhaps the most important long-term administrative announcement came in August.

Microsoft announced a phased retirement of several classic SharePoint experiences.

Beginning March 1, 2027, new classic publishing sites and activation of the classic publishing feature will be disabled for all tenants.

For tenants created on or after that date, Microsoft will also prevent creation of new classic pages and disable custom-script additions and updates by default.

Beginning October 1, 2028, classic user-created pages across all tenants will become read-only, and the ability to add or update custom scripts will be disabled.

Microsoft has stated that existing content will not be deleted as part of these changes.

This gives SharePoint administrators considerable time to identify legacy environments and plan modernization.

Administrators should begin by identifying:

• Classic publishing sites
• Wiki pages
• Web Part pages
• Classic blog pages
• Publishing pages
• Custom ASPX pages
• Sites that depend on custom scripting

Microsoft recommends using the Microsoft 365 Assessment Tool, Purview audit information, and modernization tools to evaluate the environment.

What These Changes Mean for SharePoint Administrators

Taken together, these updates show several clear directions for SharePoint Online.

SharePoint administration is becoming more AI-driven

The SharePoint Admin Agent is an important example of Microsoft moving administration from traditional menus and PowerShell toward conversational management.

Governance is becoming more important

Authoritative Sites, oversharing analysis, version-history controls, change-history reporting, and classic-content retirement all emphasize the importance of having an organized SharePoint governance strategy.

SharePoint is becoming more closely connected to Copilot

SharePoint content increasingly serves as a knowledge source for Copilot and agents. That makes content quality, permissions, metadata, lifecycle management, and authoritative sources increasingly important administrative responsibilities.

Legacy SharePoint environments need attention

The retirement of classic experiences provides administrators with a clear signal that organizations should begin identifying and modernizing legacy SharePoint content rather than waiting for Microsoft’s enforcement dates.

SharePoint Administrator Checklist

If you administer SharePoint Online, the following should be on your near-term checklist:

• Evaluate the SharePoint Admin Agent and understand its administrative capabilities.
• Identify authoritative SharePoint sites that should serve as trusted organizational sources.
• Review sharing policies before the new sharing experience reaches your users.
• Review version-history settings and their impact on storage.
• Use Change History Reports to monitor important configuration changes.
• Review your home-site configuration and the new SharePoint app experience in Teams.
• Inventory classic SharePoint content and identify sites and pages that need modernization.
• Review custom scripts and legacy customizations that may be affected by the classic-experience retirement.
• Prepare users and site owners for the continuing changes to SharePoint’s user experience.

The Bigger Picture

The SharePoint updates released during the past four months are more than a collection of individual feature changes. They reflect a broader transition in how Microsoft expects organizations to manage SharePoint.

SharePoint is becoming increasingly AI-aware, governance-focused, and automation-driven.

For administrators, the role is expanding beyond managing sites, storage, permissions, and settings. SharePoint administrators increasingly need to ensure that organizational content is secure, well-governed, discoverable, authoritative, and ready for AI.

That makes the next generation of SharePoint administration less about simply managing the platform—and more about managing the organization’s knowledge environment.

For SharePoint administrators, now is a good time to review your tenant, identify legacy content, strengthen governance, and begin preparing for an increasingly AI-driven SharePoint environment.