Krux
March 11, 2026
Microsoft's AI Can Now Work on Tasks for Hours While You Sleep
Published: March 11, 2026 at 12:31 AM
Updated: March 11, 2026 at 12:31 AM
100-word summary
Microsoft's Copilot Cowork breaks down complex requests into steps and executes them over hours, not seconds. Ask it to build a meeting deck and research brief, and it pulls context from your Outlook calendar, Teams chats, and Excel sheets to deliver while you're in other meetings. It's live now in Word and Excel, with PowerPoint and Outlook coming soon. The surprise adoption signal: 90% of Fortune 500 companies already use Copilot, with daily active usage up 10x. But Cowork is still a limited preview, not broadly available. Microsoft is betting you'll trust an AI to handle background work the same way you trust overnight package delivery.
What happened
Microsoft's Copilot Cowork breaks down complex requests into steps and executes them over hours, not seconds. Ask it to build a meeting deck and research brief, and it pulls context from your Outlook calendar, Teams chats, and Excel sheets to deliver while you're in other meetings. It's live now in Word and Excel, with PowerPoint and Outlook coming soon. The surprise adoption signal: 90% of Fortune 500 companies already use Copilot, with daily active usage up 10x. But Cowork is still a limited preview, not broadly available.
Why it matters
Microsoft is betting you'll trust an AI to handle background work the same way you trust overnight package delivery.