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Microsoft is expanding unpublished fair-use limits on Copilot Chat for commercial users without a Microsoft 365 Copilot license. Admins cannot tune them. Plan help-desk and licence policy before 9 November 2026.
Microsoft is retiring older GPT, Claude and Grok models in Copilot Studio agents (12 November) and in Power Platform prompts (2 December). What changes, why automatic migration can still break flows, the EU data details, and a four-week test plan.
Microsoft 365 Copilot Business now comes with usage-based billing on by default. What Copilot Credits pay for, why one new seat can switch on the whole tenant, and six settings finance and IT should agree before 1 December.
