Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Latest posts
Changes to inline image representation in Outlook on the web and new Outlook for Windows
We are updating how inline images are represented in the HTML body of Outlook emails in Outlook on the web and the new Outlook for Windows. This change may impact how your add-in identifies and processes inline images when using the attachment ID.
SharePoint Framework (SPFx) roadmap update – September 2025
SPFx is powering the future of Microsoft 365. From AI-driven portals to seamless integrations across SharePoint, Teams and Viva, SPFx is driving innovation at scale. This new blog series kicks off our journey into the next evolution—transparent, community-driven, and built for the AI era. Let’s shape what’s next, together.
Dev Proxy v1.2 with mock response mirroring and improved performance
Introducing Dev Proxy v1.2 with mock response mirroring capabilities that make API simulation more realistic.
The new GitHub app for Teams: from conversation to code
Meet the reimagined GitHub app for Teams: an AI-powered app to collaborate with GitHub Copilot right inside your Teams conversations.
Excel announces undo support for 3rd-party web add-ins
Most user action performed by your Copilot extension or web add-in can now be undone using the familiar ribbon Undo button, keyboard shortcuts (Ctrl+Z), or the Undo button on Copilot response cards.
Prepare your VBA projects for VBScript deprecation in Windows
In May 2024, Microsoft announced the phased deprecation of VBScript in Windows, as detailed in the official Windows IT Pro Blog. This change impacts VBA developers who rely on VBScript, particularly for reference libraries such as regular expressions. This post outlines the upcoming changes and provides guidance to help you future proof your VBA projects. How VBA projects use VBScript Visual Basic for Applications (VBA) automates tasks and extends functionality in Office applications, including Excel, Word, PowerPoint, and Access. VBScript is commonly used in VBA projects in two ways: VBScript depr...
Change to data visibility for Microsoft Graph callRecords APIs in GCC High and DoD
We're making changes to how Microsoft handles Microsoft Teams call data in GCC High and DoD environments that we expose via the Microsoft Graph callRecords APIs.
Dev Proxy v1.1 with improved support for Microsoft Graph batching
Introducing Dev Proxy v1.1 with critical fixes for Microsoft Graph batch request simulation, resolved authentication plugin issues, and enhanced the MinimalPermissionsGuidancePlugin with new reporting capabilities.
Enriching Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data (public preview)
Enrich Microsoft 365 profiles with Microsoft 365 Copilot connectors for people data