Microsoft Release Notes

Version number: 18.7.1.1 Released: September 7, 2026

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[1.17.0] - 2026-09-03

Added

• samples: Add an end-to-end Foundry-hosted Telegram agent sample (#7883)
• agent-framework-foundry-hosting: Add explicit Agent Server or agent-owned model history selection while preventing duplicated conversation replay (#7997)

Changed

• agent-framework-core, agent-framework-foundry: [BREAKING] Restore sequence-only agent middleware inputs and remove the experimental agent-hooks core extra (#7918)
• agent-framework-core, agent-framework-foundry, agent-framework-openai: Document the same-event-loop concurrency contract for shared chat clients (#7680)
• agent-framework-devui, agent-framework-hosting-responses, agent-framework-openai: Support OpenAI SDK 3.x while retaining the existing supported floors (#7967)
• agent-framework-mistral: Migrate chat and embedding clients to the official Mistral SDK (#7960)

Fixed …

Summary Workforce Engagement Management (WEM) MCP tools bring workforce actions into Copilot, Teams, and Outlook, enabling supervisors and agents to manage requests using natural language. Initial capabilities include time-off requests, shift swaps, and shift bids, with schedule visibility, leave balances, and clock in/out support planned for future releases.

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Supervisors and customer service representatives often spend a significant part of their day inside workforce management workflows—reviewing time-off requests, tracking shift swap activity, and checking pending bids—and much of this work requires navigating directly into Microsoft Dynamics 365. That changes today.

Announcing the availability of the first Workforce Engagement Management (WEM) tools on the Dynamics 365 Workforce Engagement Management model context protocol (MCP) server for Dynamics 365 Service Agent. These tools expose core WEM capabilities through MCP, making workforce management actions available from Microsoft Teams, Outlook, and Copilot through Microsoft 365 using natural language—the same surfaces where your team…

What's Changed

• .NET: Bump AWSSDK.Extensions.Bedrock.MEAI from 4.0.6.10 to 4.0.101.8 by @dependabot[bot] in https://github.com/microsoft/agent-framework/pull/7829
• .NET: Stabilize Foundry recovery tests by @rogerbarreto in https://github.com/microsoft/agent-framework/pull/7817
• .NET: fix: preserve Responses logprobs field by @he-yufeng in https://github.com/microsoft/agent-framework/pull/5860
• .NET: Honor cancellation for Foundry-hosted workflow responses by @rogerbarreto with @Copilot in https://github.com/microsoft/agent-framework/pull/7842
• .NET: Use Responses API for hosted web search in AG-UI by @rogerbarreto with @Copilot in https://github.com/microsoft/agent-framework/pull/7843
• .NET: Bump Aspire.Hosting from 13.1.0 to 13.5.2 by @dependabot[bot] in https://github.com/microsoft/agent-framework/pull/7826
• .NET: Suppress false positive Zip Slip alert by @SergeyMenshykh in https://github.com/microsoft/agent-framework/pull/7858
• .NET: added Mem0Sharp integration for in-memory storage in agent samples. by @jihadkhawaja in https://github.com/microsoft/agent-framework/pull/7792
• .NET: Annotate DevUI aggregator static-analysis false positives by @SergeyMenshykh in https://github.com/microsoft/agent-framework/pull/7864
• .NET: Rename CommunityToolkit.VectorData.CosmosNoSql to AzureCosmosDB by @adamsitnik in https://github.com/microsoft/agent-framework/pull/7878 …

[1.16.0] - 2026-08-27

Added

• agent-framework-core: Add configurable timeouts for waiting on the first background-agent task completion (#7908)
• agent-framework-core: Allow programmatic OpenTelemetry service metadata, resource attributes, and OTLP exporter configuration (#7703)

Changed

• agent-framework-foundry-hosting: Update Agent Server dependencies and expose parent FoundryToolbox constructor options (#7921)
• samples: Apply ChatKit attachment lifecycle checks consistently in the end-to-end sample (#7846)

Fixed

• agent-framework-ag-ui, agent-framework-foundry-hosting: Preserve backend-owned service-session snapshots and validate incremental provider continuation input (#7770)
• agent-framework-anthropic, agent-framework-mistral: Preserve unmapped provider finish reasons (#7850)
• agent-framework-azure-ai-search: Preserve the kinds of heterogeneous knowledge sources (#7875) …

Release Summary

Category	Description
Announcements	Announcements about the unload event deprecation and the new 2-week release cadence in Microsoft Edge.
Feature Updates	Updates to sign-in options, password management, Copilot controls, and notification protections in Microsoft Edge.
Policy Updates	New and updated policies in Microsoft Edge.
Security	Stable channel security updates are listed here.

Announcements

• Deprecating the unload event. Microsoft Edge is changing the default behavior of the web platform unload event. As the rollout progresses, pages will no longer run unload event handlers unless the site explicitly permits them.

  • In Edge 152 and 153, unload handlers will stop firing by default for 60% of page loads unless the site explicitly enables them through Permissions Policy.
  • In Edge 154, the rollout will increase to 80% of page loads.
  • In Edge 155, the rollout will reach 100% of page loads.

  The unload event is not a dependable way to save data, perform cleanup, or report the end of a session. Browsers and operating systems can suspend or terminate pages without firing it, and this can prevent pages from using the back/forward cache, which may make back and forward navigation slower. …

Excel

• Navigate to your workbook changes directly from the Copilot chat pane response [Windows, Web, Mac]

  In Copilot in Excel, the response contains links to highlight where changes are made in your workbook. Navigate directly to new sheets, tables, ranges, and objects like charts and shapes.

  Details:

  What changed: In the Copilot chat response, there now is a link you can click that will take you directly to changes in the workbook. Previously, you would need to locate the change in the response and navigate in the sheet on your own.

  Why: We want you to understand where copilot made edits and connect you to them directly from the chat response. This will help build confidence in the changes and allow you to review while you're reading the response in the chat pane.

  Try this:

  1. Send a prompt to Copilot where the workbook is modified.
  2. The chat response will show the changes in a different format with a highlight to indicate a link you can click for navigation. New Sheets, tables, ranges, and objects will be highlighted.

  Why this matters: The feature allows quick review of document changes made by Copilot, increasing transparency of the edits.

  Business impact: Teams can understand changes made while reading the response from Copilot and quickly navigate to those places for review.

  Personal impact: You can review the Copilot Edits in your document. …

Upgrading Power BI Dataflows Gen1 is now easier with the Dataflows Upgrade Wizard. Now in preview for eligible workspaces assigned to Fabric capacity, the wizard provides a guided experience to upgrade Power BI Dataflows Gen1 items to Fabric Dataflows Gen2 (CI/CD). The wizard preserves key properties of the existing dataflow and assesses each item before you begin, helping you understand the upgrade scope and expected follow-up actions. 

Modernize at your own pace

Power BI Dataflows Gen1 remains supported in a legacy state, while new feature investment focuses on Fabric Dataflows Gen2 (CI/CD), as shared in a previous post about the future of Dataflows. The Upgrade Wizard gives dataflow owners a guided self-service path to start that modernization without rebuilding their Power Query logic. 

You don't need to upgrade your full estate at once. Start with a representative set of dataflows, validate the results, and expand at a pace that works for your organization. For detailed migration planning and inventory guidance, review Migrate from Dataflow Gen1 to Dataflow Gen2. 

Build on the benefits of Dataflows Gen2 …

Calculated columns are now available in preview for Direct Lake on OneLake semantic models. This has been one of the most requested capabilities since Direct Lake launched and closes a long-standing gap with Import and DirectQuery storage modes.

You can define calculated columns directly in your semantic model using DAX in web modeling and Power BI Desktop, without changing the table storage mode or modifying data upstream.

The problem this solves

Direct Lake combines Import-like performance with near real-time data freshness by querying Delta tables in OneLake and loading data into memory as needed.

But until now, if your model needed a derived column, you had only two options: push the logic upstream into the data source or move the table to a different storage mode. Calculated columns close that gap – you can now define columns directly in the semantic model using DAX without leaving Direct Lake.

What you can build

Common use cases include:

• Derived values, such as an age calculated from a birth date.
• Concatenating fields, such as city and region into a single field for slicers.
• Formatted dates like Month-Year for grouping in visuals.
• Multilingual reports using data translations with USERCULTURE().
• Personalized content based on functions like USERPRINCIPALNAME().

Examples

1. Age = DATEDIFF( DimCustomer[BirthDate], TODAY(), YEAR ) …

What's Changed

• .NET: Add session-persisted chat client routing by @westey-m in https://github.com/microsoft/agent-framework/pull/7641
• .NET: Fix snake_case argument names in Harness file tool descriptions by @westey-m with @Copilot in https://github.com/microsoft/agent-framework/pull/7731
• .NET: Pass IServiceProvider to ChatClientAgent in AddAIAgent overloads by @westey-m in https://github.com/microsoft/agent-framework/pull/7737
• .NET: Python: Clarify PR review comment resolution by @moonbox3 in https://github.com/microsoft/agent-framework/pull/7746
• .NET: Update AG-UI samples for latest MAF + AG-UI SDK and align with docs by @danroth27 in https://github.com/microsoft/agent-framework/pull/7295
• .NET: Migrate remaining Foundry hosted samples to source deployment by @rogerbarreto in https://github.com/microsoft/agent-framework/pull/7668
• .NET: agent-hooks interception contract as a first-class experimental feature by @MohammadHaroonAbuomar in https://github.com/microsoft/agent-framework/pull/7564
• .NET: Forward AG-UI context and additional properties by @javiercn in https://github.com/microsoft/agent-framework/pull/7742
• .NET: Suppress Swagger UI CodeQL alert in AgentWebChat sample by @SergeyMenshykh in https://github.com/microsoft/agent-framework/pull/7764
• .NET: Remove AGUI history special cases from ChatClientAgent by @javiercn in https://github.com/microsoft/agent-framework/pull/7741 …