Microsoft 365 Copilot Chat is at the center of Microsoft 365 Copilot. When grounded in web data, you can ask Copilot questions, help draft content, and summarize files. If you have the Microsoft 365 …

Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

Nov 11, 2025 · This security update includes fixes and quality improvements that are part of the following updates: October 14, 2025—KB 5066791 (OS Builds 19044.6456 and 19045.6456) …

Microsoft Loop combines a powerful and flexible canvas with portable components that move freely and stay in sync across applications — enabling teams to think, plan, and create together.

Use a LAMBDA function to create custom, reusable functions and call them by a friendly name. The new function is available throughout the workbook and called like native Excel functions. You can create a …

With Power Query (known as Get & Transform in Excel), you can import or connect to external data, and then shape that data, for example remove a column, change a data type, or merge tables, in ways …

Similar to having an assistant that helps you manage your incoming paper mail, another person, known as a delegate, can receive and respond to email messages and meeting requests and responses on …

Nov 11, 2025 · This cumulative update for Windows 11, version 25H2 and 24H2 (KB5068861), includes the latest security fixes and improvements, along with non-security updates from last month’s …

When to avoid using input masks in Access As useful as they are, input masks are not appropriate in every situation. Don't use an input mask if following circumstances apply to you: People occasionally …

Overview of advanced filter criteria The Advanced command works differently from the Filter command in several important ways. It displays the Advanced Filter dialog box instead of the AutoFilter menu. …