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What’s new for SharePoint – September 2025
September was an exciting month for SharePoint and the Microsoft 365 ecosystem, bringing updates that continue to push collaboration and content management forward. The highlight of the month is Knowledge Agent in SharePoint—a game-changing feature that combines intelligent content curation, automated site maintenance, and natural-language workflow creation, all within the SharePoint experience. This innovation aims to make knowledge management smarter and more proactive than ever.
Another major update worth celebrating is the story around SPFx Field Customizers. Microsoft listened to community feedback, and advanced customizations for Microsoft Lists are here to stay. These capabilities complement column formatting, giving developers and power users more flexibility to deliver tailored experiences where JSON formatting options fall short.
This post explores these highlights and other key updates from September, so you can stay ahead and make the most of what’s new in SharePoint and related technologies.
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SharePoint Online Tenant Rename is now generally available for tenants with up to 500K sites, allowing domain name changes during rebranding or mergers. It ensures high reliability, business continuity, and compatibility with Microsoft 365 apps, but excludes vanity domains, Multi-Geo, and tenants over 500K sites.
Microsoft Whiteboard storage is migrating from Azure to OneDrive, starting February 2024 and completing by August 2025, with full deprecation of Azure storage by February 2026. Users must complete migration by then to retain access. Admins can monitor migration via PowerShell cmdlets.
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Microsoft 365 Copilot introduces two new SharePoint Admin Center skills: step-by-step task guidance and multi-variable site search for improved admin efficiency and governance. Available worldwide from October 6-7, 2025, these AI-driven features require a Copilot license and offer enhanced compliance and control via Entra ID.
This update will allow agents grounded in SharePoint library contents to use and reason over available metadata to better distinguish between similar documents and provide higher-quality answers.
We’re excited to announce two new Copilot skills in the SharePoint Admin Center:1. Step-by-Step Task GuidanceCopilot can now walk you through the exact steps required to complete common admin tasks.Example: “How can I find sites that are potentially over-permissioned?”What to expect: Copilot will recommend clear, sequential instructions to guide you from start to finish.
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The new SharePoint Content Management Assessment (CMA) dashboard, launching September–October 2025, helps admins evaluate site health, permissions, and lifecycle readiness. It automates governance tasks, strengthens security, and prepares sites for Copilot. CMA requires a SharePoint Advanced Management or Microsoft 365 Copilot license and is initiated manually by admins.
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Microsoft Viva Connections mobile will introduce an AI audio briefing feature providing summaries of top news with playback controls. Available mid-September to November 2025, it requires a Microsoft 365 Copilot license, is on by default, and needs no user configuration.
Chromium browsers will restrict local network access, prompting users for permission when accessing OneDrive, SharePoint, and Microsoft Lists. Without configuring the LocalNetworkAccessAllowedForUrls policy to pre-authorize trusted domains, users will face slower performance and loss of offline capabilities. Admins must deploy this policy before the change rolls out in Chromium 141 at September’s end.
We are announcing the ability to use up to 1,000 files per agent for SharePoint and OneDrive uploads in Microsoft Copilot Studio. This feature will reach general availability on October 6, 2025.
Chromium browsers will restrict local network access, prompting users for permission when accessing OneDrive, SharePoint, and Microsoft Lists. Without configuring the LocalNetworkAccessAllowedForUrls policy to pre-authorize trusted domains, users will face slower performance and loss of offline capabilities. Admins must deploy this policy before the change rolls out in Chromium 141 at September’s end.
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SharePoint Embedded will introduce a new default filtering feature by sensitivity labels for containers, rolling out worldwide from late October to November 2025. Admins can better organize containers without impacting user workflows. Organizations should review label taxonomies and update documentation accordingly.
New PowerShell cmdlets for managing SharePoint Embedded container membership will roll out worldwide from late September to October 2025. Administrators can add, update, or remove users via PowerShell without using the SharePoint Admin Center. Update your PowerShell module and inform your team to prepare.
SharePoint Embedded will allow admins to update the principal owner of user-owned containers via the SharePoint Admin Center or PowerShell starting late September 2025. This helps manage ownership during user or team changes, requires no opt-in on SPAC, and needs PowerShell updates. No compliance issues noted.
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Viva Amplify in SharePoint enables users with licenses to distribute news posts across Outlook, Teams, Viva Engage, and SharePoint sites from a single interface. It auto-optimizes content, offers engagement analytics, and rolls out from late September to mid-October 2025, requiring no admin action unless updating guidance.
To help organizations manage metered consumption costs for SharePoint Agents and Copilot Tuning, we are introducing support for Capacity Packs in the Microsoft 365 Admin Center (MAC). This feature allows global administrators to use prepaid message subscriptions before incurring pay-as-you-go (PAYG) charges. Each Capacity Pack provides 25,000 Copilot messages per month, which can be allocated to Copilot Chat environments via the Power Platform Admin Center (PPAC). Once enabled, MAC will prioritize consumption from these prepaid packs and automatically switch to PAYG when the pack is exhausted. Admins can monitor usage in PPAC, including: • Total messages consumed • Remaining prepaid capacity • Message allocation per environment Key Benefits: • Streamlined billing setup in MAC • Reduced risk of overage charges • Automated environment provisioning for Copilot Chat • Improved cost visibility and governance
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SharePoint Site Lifecycle Management now supports custom site inclusion via CSV upload of up to 10,000 URLs for precise policy enforcement. The inactivity period setting moved to the Configuration page. This feature is available worldwide by default, requiring no extra setup. Admins should prepare CSV files and update documentation accordingly.
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Microsoft 365 Copilot is integrated into Windows File Explorer and OneDrive Activity Center, allowing users to summarize documents, generate FAQs, compare files, and ask questions about OneDrive files. The feature rolls out globally by mid-September 2025, is on by default, and requires no admin setup.
Knowledge Agent (preview) is a new AI-powered SharePoint feature launching mid-September 2025, unifying AI tools into a role-adaptive interface for content optimization and Copilot support. It changes agent licensing, adds intelligent actions, and allows admins to control site participation without individual feature setup.
With AI workflows in the Workflows app for Teams & SharePoint document libraries, you can build custom AI-powered templates to automate complex tasks and streamline daily operations. Admins can enable this feature to equip users with intelligent automation tools that make managing work more efficient and intuitive.
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Power BI’s legacy “Visualize the List” and “Visualize the Library” features in SharePoint Online will retire between mid-November and mid-December 2025. Users can no longer create or access reports via these features, but Export to Power BI and Power BI Desktop connections remain supported. No admin action is required.
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SharePoint no longer plans to retire Field Customizers but is evaluating it. Currently, no impact exists, but future changes may stop custom code rendering in lists and libraries. Transition to Column Formatting is recommended, with Command Set and Application Customizers still supported. Planning for transition is advised.
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OneDrive’s folder sync selection dialog will be temporarily unavailable for users with the zh-CN language setting from September 29 to late October 2025 due to GB18030 compliance updates. Users should switch to zh-HK, zh-TW, or another language temporarily to maintain selective sync access.
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Use the new PAYGO consumption-based meter to pay for your extra SharePoint storage needs. This reduces the operational overhead associated with purchasing extra storage packs and more seamlessly integrates with Microsoft 365 Archive.
Listen to the latest updates
This month’s update is now also available as a podcast! If you prefer listening over reading, or want to catch up on the latest SharePoint developments while commuting or running, you can now tune in on Spotify and YouTube.
The podcast features AI hosts Maria and John, who dive into the same updates covered in this post but through a conversational format. John brings his technical analyst perspective with attention to detail, while Maria focuses on the strategic implications and user experience impact. As the prompt director, I guide the conversation to ensure we’re covering what matters most for your day-to-day work.
This is an experiment in making tech updates more accessible, so I’d love your feedback on this format. Give it a listen and let me know what you think!
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