“Bring your AI to work” is here: Microsoft edition - What Multiple Account Access to Copilot means

Multiple Account Access to Copilot On October 1. 2025 Microsoft released a blog post explaining how employees now can use Copilot from their personal 365 plans to work on organizational data. This is of course, an extension of the already existing "Multi account" feature that was released for corporate accounts a "couple of months" ago. In other words, “bring your own Copilot” is now a real thing in Word, Excel, PowerPoint, Outlook, and OneNote on desktop and mobile, with enterprise protections intact. “Bring your AI to work” is an important topic, and banning AI altogether might not be the answer. Whether sanctioned or shadow, AI has already entered everyday knowledge work. Microsoft’s new multi‑account access offers a safer path where employees can use Copilot from their personal Microsoft 365 subscriptions on work files, while the file’s access, auditing, and compliance still flow through the work identity and tenant. That’s better than users copy‑pasting sensit...

Prepare for shared channels in Teams


According to a post in the message center not long ago, the shared channels feature in Teams is about to roll out in GA after being available in preview for some time.

Although shared channel seems to be available by default in the Teams client, please note that this is only an internal availability, unless the admin of the tenant has enabled/allowed the b2b-directconnect in Azure AD. 

I recommend reading up on this article in order to familiarize yourself with the configuration. It is not enabled by default, and there are several options available. A good approach could be by opening to specific partners and not allowing "everyone". If the company has invested in AAD P1 or P2 licenses, it is also possible to trust the partner's MFA and Compliance checks in conditional access, easing the usage for users.

This feature adds to the mix of external user access. It does not replace the guest user feature, nor anonymous access to teams meetings. But the real benefit of shared channel in my view, is how it adds the channel in the external user's existing list of teams and channels and does not require a tenant switch.

According to the message center post, this should be rolling out mid July and the following weeks.