Sales of high-voltage optical cables

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Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

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Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

What is a Microsoft account?

Your Microsoft account dashboard is where you can manage your personal information and security settings, keep tabs on your subscriptions and order history, and manage your payment and billing

March 10, 2026—KB5079473 (OS Builds 26200.8037 and 26100.8037)

This cumulative update for Windows 11, version 25H2 and 24H2 (KB5079473), includes the latest security fixes and improvements, along with non-security updates from last month''s

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Available today: Anthropic Claude Opus 4.7 in Microsoft 365 Copilot

Today we''re expanding model choice in Microsoft 365 Copilot with the addition of Anthropic''s latest model—Claude Opus 4.7—now available in Copilot Cowork (Frontier) and Copilot

April 14, 2026—KB5083769 (OS Builds 26200.8246 and 26100.8246)

This cumulative update for Windows 11, version 25H2 and 24H2 (KB5083769), includes the latest security fixes and improvements, along with non-security updates from last month''s

Microsoft Support

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.

Update Audio drivers in Windows

Update audio drivers using Windows Update (Recommended) Windows Update is the recommended way to get the latest audio drivers. Select Start > Settings > Windows Update. Select Check for