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What’s New in Microsoft 365 Copilot | November December 2025 . . . Welcome to the special edition of What's new in Microsoft 365 Copilot for both November and December 2025! Every edition, we highlight new features and enhancements to keep Microsoft 365 admins up to date with Copilot features that help your users be more productive and efficient in the apps they use every day
November 11, 2025—KB5068861 (OS Builds 26200. 7171 and 26100. 7171 . . . Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU) For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions