Microsoft 365 Developer Blog

A developer platform for building collaborative apps for hybrid work

Featured posts

Building Agents for Teams: Turning conversations into outcomes
Jul 14, 2026
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Building Agents for Teams: Turning conversations into outcomes

Joey Glocke

The Microsoft Teams platform mission is to build the best collaborative platform in the world. We want to make it easy for developers to build agents that parti...

Microsoft 365 DeveloperMicrosoft Teams
SharePoint Copilot Apps Now in Public Preview: From Intent to Action in Microsoft 365 Copilot
Jul 9, 2026
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SharePoint Copilot Apps Now in Public Preview: From Intent to Action in Microsoft 365 Copilot

Vesa Juvonen

SharePoint Copilot Apps are now in public preview, introducing a new way to bring guided, action-oriented business experiences into Microsoft 365 Copilot. By co...

Microsoft 365 DeveloperSharePoint FrameworkSharePoint

Latest posts

Oct 8, 2019
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SharePoint Development Community (PnP) – October 2019 update

SharePoint team

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.

Oct 7, 2019
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New CDN URLs and Subresource Integrity Hash for MSAL JS

Microsoft identity platform team

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.

Sep 26, 2019
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The Microsoft Graph Toolkit is now generally available!

Elise Yang

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!

Sep 24, 2019
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MIME format support for Outlook mail and attachments, translate item ID APIs are now available in Microsoft Graph v1.0

Sivaprakash Saripalli

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.

Sep 20, 2019
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End of support for Basic Authentication access to Exchange Online API’s for Office 365 customers

Sivaprakash Saripalli

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.

Sep 19, 2019
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Announcing XAML controls for Microsoft Graph in the Windows Community Toolkit

Elise Yang

Today at UnoConf in Montreal, we are announcing that the Windows Community Toolkit now includes a preview of XAML controls for Microsoft Graph. To watch the announcement via live stream please tune in for the Uno Platform Keynote at 10:45AM EST available online here.

Sep 13, 2019
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Breaking changes: Calls and online meetings API updates in Microsoft Graph beta

Microsoft Graph team

We’re announcing several changes to the calls and online meetings APIs in Microsoft Graph beta, including a few breaking changes.

Sep 12, 2019
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Breaking change: redundant beta APIs for Microsoft Teams to be removed

Nick Kramer (TEAMS)

In the last week of September we will remove the following beta APIs, as the same functionality is already available through different APIs. v1.0 APIs are not affected.

Sep 11, 2019
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Office 365 CLI version 2 has been released

SharePoint team

We are happy to announce new major version being released for the Office 365 CLI tool.