The biggest SharePoint Online and Power Platform news for April 28, 2026 centers on major legacy retirements, new AI‑driven SharePoint capabilities, and ongoing security updates across Microsoft 365.
🧠Executive Summary
SharePoint Online is entering its most transformative year in a decade, with AI-first experiences, major feature retirements, and new governance capabilities reshaping how organizations manage content and collaboration. At the same time, the Power Platform is accelerating with Copilot‑driven automation, embedded AI agents, and new model-driven app enhancements that deepen integration across Microsoft 365. Security remains a top priority, highlighted by a recently patched actively exploited SharePoint Server zero‑day. Organizations should prioritize migration planning, Copilot readiness, and governance updates to stay ahead.
đź“° Key SharePoint Online & SharePoint Ecosystem News (April 2026)
1. Hard retirement of classic SharePoint components (April 2, 2026)
Microsoft has enforced a full shutdown of several legacy SharePoint technologies, marking one of the most significant modernization pushes in years.
- SharePoint Add‑Ins and Azure ACS authentication have stopped functioning entirely.
- SharePoint 2013 Workflows are fully retired with no extensions or exceptions, requiring migration to Power Automate.
- Domain‑isolated web parts are no longer supported.
These changes are part of Microsoft’s broader move away from classic extensibility models toward cloud‑native and AI‑integrated solutions.
2. SharePoint evolves into an AI‑first “Agentic” platform
SharePoint’s 2026 roadmap highlights a shift from a document repository to an autonomous, AI‑driven environment:
- Site‑specific AI agents now understand each site’s structure and can answer contextual questions about content.
- A SharePoint Admin Agent proactively monitors permissions, oversharing, and site lifecycle issues.
- Copilot Academy Reports (rolling out through June 2026) help organizations measure AI adoption across SharePoint and Microsoft 365.
This marks the most significant functional evolution of SharePoint since the introduction of the Modern experience.
3. New governance and storage innovations
Microsoft is expanding tools to manage data growth and compliance:
- File‑level archiving begins July 2026, reducing storage costs by up to 75% while keeping files searchable.
- Adaptive DLP scopes in Purview remove the old 100‑site limit and dynamically apply policies based on metadata or URL patterns.
đź“° Key Power Platform & Microsoft 365 Integration News
4. Power Platform highlighted in April 28, 2026 Microsoft 365 community call
The weekly Microsoft 365 & Power Platform product updates call (held April 28) features:
- Updates across Power Apps, Power Automate, Copilot Studio, Microsoft Graph, Viva, and SharePoint
- Sessions on building Copilot agents, transforming Power Apps into Copilot‑driven experiences, and using coding agents for declarative chat.
This reflects Microsoft’s continued push to unify Power Platform with Copilot and agent‑based development.
5. April 2026 Microsoft 365 updates include deeper AI and compliance integration
Microsoft’s April 2026 update wave introduces:
- AI‑powered DLP alert summaries, advanced auto‑labeling, and new Purview governance features
- Rule‑based app management in Teams and expanded cross‑tenant collaboration
- Enhancements to the new AI‑powered SharePoint experience These updates reinforce Microsoft’s shift toward AI‑driven security, compliance, and automation.
đź“° Security News Impacting SharePoint
6. SharePoint Server zero‑day patched (April 2026)
Microsoft patched CVE‑2026‑32201, a spoofing vulnerability in SharePoint Server caused by improper input validation.
- Exploitation could allow attackers to manipulate trusted content or interfaces.
- The flaw was actively exploited prior to patching.
While this affects SharePoint Server rather than SharePoint Online, it is significant for hybrid organizations.
