Microsoft folks are used to being the afterthought in AI tutorials. Not here. Claude connects to Microsoft 365 just as cleanly as it does to Google, and this episode shows every step on a real account: the chair mail calendar Jason runs his Vistage practice on, not a demo tenant.
The connector is developed by Anthropic and hosted through Claude, so the trust posture is solid. Personal and Hotmail accounts sail straight through. The one wrinkle is company domains: if you hit a "need admin approval" screen, that's your security stack doing its job, not a dead end. One person clicks approve once and it's unlocked for the whole company. If you're the CEO and the administrator, one checkbox does it. Jason spends real time here because this wall is exactly where people give up.
Then the proof, same as the Google episode: "What's on my Microsoft calendar tomorrow?" returns the day. "Do I have any conflicts this week?" surfaces a Thursday double booking. And the payoff prompt: "What's on all of my calendars tomorrow?" pulls Microsoft 365 and Google Calendar into one combined answer, conflicts across both included.
From this point, Claude doesn't care where your calendar lives, and Google and Microsoft viewers are on the same road. Next episode: stop poking at the calendar and start reading the week like a chief of staff. Conflicts, prep, patterns.