Microsoft 365 Developer Blog
A developer platform for building collaborative apps for hybrid work
Featured posts
SharePoint Framework (SPFx) roadmap update – August 2026
SPFx 1.24 Beta 3 is now available, React 18 support is coming in 1.24, and a new Copilot Components preview program opens for customers and partners.
Building Agents for Teams: Managing the noise of collaboration
Most of us are familiar with one-to-one agent chats: private, direct interactions where rules are relatively simple. With only you and the agent, each moment ha...
Latest posts
Attaching large files to Outlook messages in Microsoft Graph (preview)
Today, we’re excited to announce the release of Large file attachment upload support for Outlook messages via the Microsoft Graph beta endpoint.
Develop applications and reports using the new Project for the web
This blog discusses the power and versatility of the new Project, including ease of integration with the tools and systems your organizations uses. Learn how easy it is to develop and deploy using the Power Platfrom: PowerApps, Flow, Power BI, and AI Builder.
Moving management of solutions from Seller Dashboard to Partner Center
Microsoft is rolling out a modern management experience for the Office Store program in Partner Center. Office Add-ins (including Outlook add-ins), SharePoint add-ins, Teams apps, and Power BI visuals will be migrated to Partner Center.
Microsoft Authentication Libraries for Android, iOS and macOS are now Generally Available
We are excited to announce General Availability of Microsoft Authentication Libraries (MSAL) for Android, iOS and macOS!
SharePoint Development Community (PnP) – October 2019 update
SharePoint Dev Ecosystem / SharePoint Patterns and Practices (PnP) October 2019 update is out with a summary of the latest guidance, samples, and solutions from SharePoint engineering or from the community for the community. This article is a summary of all the different areas and topics around the SharePoint Dev ecosystem during the past month.
New CDN URLs and Subresource Integrity Hash for MSAL JS
To ensure our commitment towards providing a great developer experience, we are announcing a new set of CDN URLs for MSAL JS. The new CDN URLs will be hosted on Microsoft Azure CDN and will ensure better availability of our library, so you can continue to have a great user experience for your application.
The Microsoft Graph Toolkit is now generally available!
In May 2019 we introduced the Microsoft Graph Toolkit, a collection of reusable, framework-agnostic web UI components that work automatically with Microsoft Graph. We’re excited to announce that this first collection of UI components is now generally available!
MIME format support for Outlook mail and attachments, translate item ID APIs are now available in Microsoft Graph v1.0
You can now use these Outlook APIs in Graph v1.0 to implement production apps that require access to the raw contents of an email message or an attachment. You can download file attachments in binary format or item attachments in MIME format. Also, you can translate the format of identifiers of multiple resources by specifying the source and target ID types.
End of support for Basic Authentication access to Exchange Online API’s for Office 365 customers
Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Online. This means that new or existing applications using one or more of these API’s/protocols will not be able to use Basic Authentication when connecting to Office 365 mailboxes or endpoints and will need to update how they authenticate.