What's New in Microsoft 365 - Friday, September 04, 2026

Copilot Studio Blog

What’s new in Copilot Studio, August 2026: GitHub Copilot harness

Microsoft Copilot Studio is giving makers new ways to build agents that can reason through complex work, draw on richer context, and use a growing range of tools and capabilities to get real work done . . .

Wednesday, September 02, 2026

Microsoft 365 Copilot Blog

Available today: Anthropic Claude Fable 5.1 in Microsoft Copilot

Claude Fable 5.1 is now joining the frontier models available in Copilot Cowork and Copilot Studio, giving customers more choice as they delegate more complex tasks to AI. Fable 5.1 is designed for l . . .

Wednesday, September 02, 2026

What’s New in Microsoft Copilot | August 2026

Welcome to the August 2026 edition of What’s New in Microsoft Copilot! Every month, we highlight new features and enhancements to keep Microsoft 365 customers up to date with Copilot features that hel . . .

Monday, August 31, 2026

Microsoft 365 Blog

PPCC 2026: Bringing AI and your business processes together

Register now to see Copilot, agents, and automation in action at PPCC 2026 Every enterprise runs on business processes. Applications hold the data, permissions, and rules. Workflows move information a . . .

Thursday, September 03, 2026

Microsoft 365 Blog - Tech Community

Introducing Viva Glint APIs for Survey Data Export and Visier Integration

Enterprise HR analytics increasingly depend on frictionless data integration across a diverse ecosystem of solutions to unlock deeper, actionable insight. With the introduction of programmatic survey . . .

Wednesday, September 02, 2026

Microsoft 365 Developer Blog

Behind SPFx Dev Skills: testing what agents know and fixing what they miss

How much guidance does an AI coding agent actually need? See how we used evaluation data to target SPFx knowledge gaps, improving results without wasting tokens on what models already know. The post B . . .

Wednesday, September 02, 2026

Microsoft 365 Insider Blog

Text predictions off by default in Word and Outlook

We’re making an update to the default text predictions experience in Microsoft Word and Microsoft Outlook, giving you more control over whether you receive suggestions as you type. What’s new Text pre . . .

Tuesday, September 01, 2026

Microsoft Teams Blog

Microsoft Teams Rooms: Platform choice delivers flexibility for your spaces

Microsoft Teams Rooms gives organizations the flexibility to create high-quality collaboration experiences across meeting spaces of every kind and size. Often we hear from customers, “which device or . . .

Thursday, September 03, 2026

Exchange Team Blog

Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline

Several years ago, we announced Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online. Since then, we have been periodically updating the “oldest acceptable ve . . .

Wednesday, September 02, 2026

Microsoft SharePoint Blog

Introducing SharePoint News and Viva Engage cross-posting

SharePoint helps communicators create rich, engaging stories, announcements or news posts for their organizations. Viva Engage helps those stories travel through the communities and conversations wher . . .

Thursday, September 03, 2026

What’s New in Copilot in SharePoint: September 2026

Your monthly roundup of what’s new in Copilot in SharePoint. Copilot in SharePoint helps you do more with your content — ask questions, run workflows, and create sites, pages, interactive reports, and . . .

Wednesday, September 02, 2026

SharePoint Flexible Sections just got more predictable and easier to use

Flexible Sections give SharePoint page authors the freedom to build layouts without a strict column structure, resizing, moving, and overlapping web parts freely within a section. That freedom is powe . . .

Tuesday, September 01, 2026

Viva Engage Blog

Make Viva Engage feel more like your organization: Custom Branding available now

Organizations invest heavily in building their visual brand, culture and identity, and Engage is where a lot of it happens internally - leaders and employees connect, employees find each other across . . .

Thursday, September 03, 2026

Power Apps Blog

Turbocharge your canvas development with the canvas authoring agent plugin - now generally available!

Canvas apps agentic coauthoring is now generally available Today we’re excited to announce a major milestone for makers: canvas apps coauthoring with agents is now generally available . This capabilit . . .

Tuesday, September 01, 2026

Power BI Updates Blog

Modern Power BI architecture choices for reporting on Azure Databricks: A performance benchmark for Power BI storage modes

Many enterprise Power BI semantic models use Azure Databricks as a data source. When building these models, developers and architects face an early and consequential decision: which storage mode to us . . .

Thursday, September 03, 2026

Power BI sample reports, refreshed with modern visual defaults

Microsoft has refreshed its Power BI sample reports with modern visual defaults, stronger semantic models, mobile-optimized layouts, and newer authoring features to help creators build clearer, more e . . .

Wednesday, September 02, 2026

Intune Customer Success

From GPO to Microsoft Intune: A practical guide to cloud-first policy management

By: Per Larsen - Senior Product Manager | Microsoft Intune For many organizations, Group Policy Objects (GPOs) remain an important part of Windows configuration. As device strategies expand to include . . .

Monday, August 31, 2026

Azure Virtual Desktop Blog

Microsoft Azure Virtual Desktop Hybrid is now generally available

Extend Azure Virtual Desktop to your on-premises environment. Run desktops where you need them. Manage on-premises session hosts from Azure. Many organizations want to modernize their virtual desktop . . .

Tuesday, September 01, 2026

Microsoft Security Blog

ASCII smuggling crosses over from AI prompt injection to phishing evasion

In this article What is ASCII smuggling? Writing a practical ASCII-smuggling signature What we observed: ASCII smuggling repurposed for phishing What is known and what is new Is there a detection gap? . . .

Thursday, September 03, 2026

Impersonating IT support: how threat actors turn a remote session into enterprise-wide access

In this article Risk to enterprise environments Attack chain overview Mitigation and response recommendations Learn more Microsoft Threat Intelligence has observed a human-operated intrusion campaign . . .

Wednesday, September 02, 2026

Counterfeit installers to system compromise: Tracking a deceptive software download campaign

In this article Attack chain overview Campaign scope and targeting Mitigation and protection guidance References Learn more Microsoft Defender Experts is tracking an active malware campaign that uses . . .

Tuesday, September 01, 2026

Cybersecurity IR Workshop: The workshop you shouldn’t miss

In this article What is the Cybersecurity Incident Response Readiness Workshop? Our approach: How we assess your maturity Learn more Cybersecurity incidents can unfold in hours, but response plans oft . . .

Tuesday, September 01, 2026

Microsoft Defender XDR Blog

Stop identity attacks before they start with Microsoft ISPM recommendations

Many major breaches involve compromised identities, excessive privileges, or misconfigured access. Long before ransomware detonates or data leaves the building, adversaries are quietly abusing valid a . . .

Tuesday, September 01, 2026

Microsoft Azure Blog

Enterprise AI transformation relies on the end-to-end platform: Azure was built for this moment

Summary The recognition for Microsoft over the past couple of weeks comes down to models, infrastructure, data, applications, and developer tools working as one system when AI moves into production. E . . .

Thursday, September 03, 2026

GPT-6 Astra: Frontier intelligence for work, now available in Microsoft Foundry

The next era of enterprise AI will not be defined by chat experiences. It will be defined by how well a model can work for and with you. GPT-6 Astra , OpenAI’s newest frontier model, begins rolling ou . . .

Thursday, September 03, 2026

How Microsoft scaled physical security with Azure Arc and Azure Virtual Desktop

When a physical security operator begins a shift supporting Microsoft’s global datacenter operations, they depend on a collection of applications and systems that help monitor access activity, review . . .

Thursday, September 03, 2026

AI agent optimization: How context engineering lowers AI costs

This blog post is the third of a four-part series called The Economics of Agent Optimization , which shares the strategies, capabilities, and proof points to help you optimize agent costs and run AI a . . .

Wednesday, September 02, 2026

Microsoft Foundry Blog

MAI-Transcribe-2: Highest quality transcription, at the fastest speed and lowest cost

Speech is where a growing share of our work starts. Voice agents have to hear before they can respond. Meeting assistants, contact center analytics platforms, and media libraries all depend on turning . . .

Thursday, September 03, 2026

Bringing Open Models to Fireworks on Microsoft Foundry

Enterprises want faster access to capable open models, but they also need identity, governance, cost control, and a clear understanding of where data is processed. Fireworks on Microsoft Foundry is de . . .

Thursday, September 03, 2026

Claude Fable 5.1 is now available in Microsoft Foundry

Fable 5.1 and Mythos 5.1 are the same underlying model. Claude Fable 5.1 is a public preview version with safeguards that fallback for cyber and bio capability queries; Claude Mythos 5.1 is Anthropic’ . . .

Tuesday, September 01, 2026

Stop Letting Agents Run the Workflow

A user submits a ticket: “Please grant temporary admin access to the finance reporting database for month-end close.” A five-agent system handles it beautifully. A triage agent classifies the request. . . .

Tuesday, September 01, 2026

Six Lessons for Reliable Agent Optimizer Gains on Harder Agents

Authors: Abi Komma, Charles Kim, Luffy Chen, Vivek Bhadauria, Morteza Ziyadi, Victor Dibia, Ilya Matiach What happens when you push agent optimizer to its limits - larger datasets, tool-calling agents . . .

Tuesday, September 01, 2026