Custom Engine Agents in Microsoft 365 Copilot

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Agents in BizChat has been available for some time already, but now there is an upcoming update to Agents. The introduction of “ custom engine agents ” in Microsoft 365 Copilot! These specialized agents can be built on any large language model (LLM), toolchain, or orchestration tool, tailored specifically for your domain or tenant workflows. Initially supported in Microsoft Teams, this feature will soon be available in Microsoft 365 Copilot Business Chat ( BizChat ).   The introduction of Custom engine agents enables your organization to create customized experiences using your own AI systems and orchestrators. You can design unique prompts, connect to any LLM, and integrate these custom agents with Microsoft 365 Copilot. After the rollout, users will be able to access these agents, provided they are enabled and deployed in the Microsoft 365 admin center under the Copilot tab.   You can read more about the feature on this page . Eligible users can create agents using Micros...

EWS in Exchange online is about to be retired

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In 2018, Microsoft announced the discontinuation of feature updates to Exchange Web Services (EWS) in Exchange Online, urging developers to transition to Microsoft Graph. Now, Microsoft has announced that starting October 1, 2026, EWS requests from non-Microsoft applications to Exchange Online will be blocked.

This is a significant change that emphasizes the need for IT departments to take action. It's crucial to start mapping existing tools, scripts, or integrations that rely on EWS and plan for their transition.

There's no direct way to opt out of this change. The change only applies to Microsoft 365 and Exchange Online. EWS in Exchange Server will not be affected.