Microsoft 365 Developer Blog

A developer platform for building collaborative apps for hybrid work

Top 5 AppSource validation errors for Office Add-ins submissions – September 2023

September 29, 2023 Sep 29, 2023 09/29/23

Elizabeth Samuel

AppSource validation ensures your Office Add-in submission follows Microsoft’s quality standards. This blog post covers the five current most common validation pitfalls.

New Office Add-ins entry point available online

August 24, 2023 Aug 24, 2023 08/24/23

Skylar Pan

Use the new add-ins entry point to manage all your Office Add-ins and find the right add-in the AppSource and Office marketplace.

Top 5 AppSource validation errors for Office Add-ins submissions – June 2023

June 29, 2023 Jun 29, 2023 06/29/23

Elizabeth Samuel

Don’t lose valuable time getting your Office Add-in to market – learn how to avoid these common AppSource validation pitfalls!

What’s new for Office Add-ins: Announcements from Build 2023

June 12, 2023 Jun 12, 2023 06/12/23

Office Add-ins team

The Microsoft 365 ecosystem is expanding rapidly. In this blog, we'll explore the new capabilities and features available to empower your Office solutions even more.

Build 2023: Building apps that bring together AI and collaboration

May 23, 2023 May 23, 2023 05/23/23

Ben Summers

This blog highlights all the new features we’ve delivered – features that, when combined with our AI and Copilot capabilities, promise to make the Microsoft 365 platform an even more powerful place to build a new generation of collaborative apps.

Updates to the Microsoft 365 Developer Program

April 13, 2023 Apr 13, 2023 04/13/23

Kelly Bowen-McCombs (She/Her)

Learn about the latest updates to the Microsoft 365 Developer Program.

Top five AppSource validation errors for Office Add-ins submissions – March 2023

March 31, 2023 Mar 31, 2023 03/31/23

Office Add-ins team

AppSource validation ensures your Office Add-in submission follows Microsoft’s high-quality standards. Learn how to avoid these common validation pitfalls!

Build once, deploy efficiently, connect across Microsoft 365

March 29, 2023 Mar 29, 2023 03/29/23

Daniel Carrasco

Learn about our announcements in our special virtual event showcasing new capabilities for developers to extend Microsoft Teams apps across Microsoft 365.

Create a Teams tab and Outlook Add-in with a Hello World project

March 29, 2023 Mar 29, 2023 03/29/23

Rabia Williams

In just minutes, you can easily create a Hello World project with both Microsoft Teams tab and Outlook Add-in elements backed by a single unified app manifest.