Copilot

November 2026 for Microsoft admins: October follow-up, Patch Tuesday on 10 November and a new Copilot

Before the next Patch Tuesday, a look back at the last one. October’s update was the largest Microsoft has shipped, and a few of its problems only showed up afterwards. Then what we can say about tomorrow, which isn’t much, the release settings that change this month, and Copilot, which has changed more in six weeks than most products do in a year.

Teams and Copilot are moving to cloud.microsoft: check your allow-lists before October

Two of the most used Microsoft 365 web addresses are changing this autumn. Copilot is moving to copilot.cloud.microsoft and Teams on the web to teams.cloud.microsoft. If something in your network blocks *.cloud.microsoft, October is when your users find out.

What’s changing

Copilot: m365.cloud.microsoft becomes copilot.cloud.microsoft

In message center post MC1462915 Microsoft says it started redirecting users from m365.cloud.microsoft to copilot.cloud.microsoft in early September, in organisations where the new address is reachable. Everyone else gets redirected in early October [1]. If the address is blocked, the redirect happens anyway, and “affected users may be unable to use Copilot in the web app, desktop app, and Microsoft Edge experience” [1].