Microsoft 365 Apps update channels need a fresh look in 2024

Almost every Microsoft 365 environment I work in has its own history with Microsoft 365 Apps update channels. The topic is rarely theoretical. Update cadence affects your security posture as much as the usefulness of new features, and decisions taken years ago, such as making Semi-Annual Enterprise Channel the default, can suddenly look dated. Over the past few months I've watched Copilot for Microsoft 365 push a lot of organizations into re-examining their channel strategy. The channel you pick now has a real say in how fast you get new capabilities and how manageable (or painful) your testing cycles turn out to be.

Update channels decide more than the update schedule

If you look after Microsoft 365 Apps deployments, you know the three main options: Current Channel, Monthly Enterprise Channel and Semi-Annual Enterprise Channel. Each one was built around different priorities. Current Channel gets new features and improvements first, sometimes more than once a month. Monthly Enterprise Channel ships one predictable update per month, so there are fewer surprises while you still stay reasonably current. Semi-Annual Enterprise Channel, for years the default in cautious environments, brings feature updates only twice a year and gives IT more time for compatibility testing. In my recent projects, though, that "safe harbor" has been falling out of favor, not least because Copilot for Microsoft 365 needs a more current channel. Stay on Semi-Annual and you will miss important new capabilities in 2024 and beyond.

Copilot for Microsoft 365 turns the channel into a hard requirement

Copilot for Microsoft 365 has shifted the conversation about update strategy considerably. As of March 2024, Copilot only works with Microsoft 365 Apps on Current Channel or Monthly Enterprise Channel. Semi-Annual is not supported at all. Many organizations have rethought their approach because of this, often under real time pressure. Moving from Semi-Annual to a faster channel takes more than changing one setting. Compatibility checks for add-ins and business apps have to fit a much shorter cycle, and plenty of IT teams have found that their testing process was never designed for that. The ring model has become essential here. You start with a small pilot group of tech-savvy users and then widen the rollout step by step. It's also a good opportunity to put testing and feedback on a more professional footing. I covered preparing your tenant for Copilot (and avoiding oversharing problems) in an earlier post.

Intune, Group Policy and the admin center can all change the channel

Technically, switching update channels is simple these days, and you have several ways to do it. Intune handles it through the settings catalog or Office configuration profiles. If you prefer the traditional route, Group Policy and the Office Deployment Tool still work, and Microsoft keeps a current overview on Microsoft Learn. I'm a big fan of the Microsoft 365 Apps admin center (config.office.com). You can manage channels and servicing profiles centrally there, and the built-in inventory and reporting show you devices that are stuck in the wrong channel or lagging behind. Aim for a clean, documented transition, ideally with an inventory before and after. One practical tip from my own projects:

When you change update channels, set up reporting so outliers show up quickly, whether through the Apps admin center inventory, KQL queries or your own PowerShell scripts.

Here's a quick PowerShell check for the current channel on a device:

Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Office\ClickToRun\Configuration" | Select-Object CDNBaseUrl

Add-ins and bandwidth put the ring model to the test

A "faster" channel sounds appealing, but it comes with trade-offs. Add-ins and macros have to be tested on a tighter schedule, and in large, complex environments that effort is easy to underestimate. I always recommend a dedicated preview group of technically skilled users who have enough bandwidth for larger builds. Bandwidth is a topic of its own. Large update rollouts can put real pressure on your WAN or internet connection. Delivery Optimization helps here because devices can pull updates from peers on the same network, which takes load off the external link. Whoever manages channels should also plan content distribution, particularly in organizations with many branch offices or remote sites.

The simple mermaid diagram below shows the main touchpoints and how they connect:

flowchart TD
    Devices["Devices"] --> UpdateChannel["Update channel setting"]
    UpdateChannel --> UpdateSource["Update source (Internet / DO)"]
    UpdateChannel --> AddInCompatibility["Add-in compatibility"]
    UpdateSource --> Bandwidth["Bandwidth / Network"]
    UpdateChannel --> FeatureAvailability["Feature availability (e.g. Copilot)"]
    UpdateChannel --> AdminTools["Admin tools (Intune, GPO, Admin Center)"]

Figure: How update channel, features, bandwidth and management depend on each other for Microsoft 365 Apps.

I see no way back to slow channels

Unless your organization is completely cut off from Microsoft's new features, staying on a slow update channel no longer holds up. Monthly Enterprise Channel strikes a good balance. New features land on a regular schedule you can work with, which makes planning and testing far more practical than keeping pace with Current Channel. Any move to a faster channel still needs careful planning, though. In projects I've seen rushed switches to Current Channel without a proper pilot cause serious trouble, with broken macros, failing add-ins and frustrated business users. Take the time to build rings, run disciplined testing and feedback loops, and use the tooling that's available now. You'll be glad you did later. Staying current is no longer optional. It's the only way to remain secure and prepared for whatever Microsoft ships next.