The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

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

Notes: The option to go back to your previous version of Windows is only available for a limited time after upgrading. In most cases, you have 10 days to go back. Apps that have been added, removed, or updated after the upgrade might not be available or function properly after going back to the previous version of Windows.

More help If you're using a work or school account and couldn't install classic Outlook following the steps above, contact the IT admin in your organization for assistance.

Highlights This update addresses security issues for your Windows operating system. Improvements This security update includes improvements that were a part of update KB5058499 (released May 28, 2025). The following summary outlines key issues addressed by the KB update after you install it. Also, included are available new features. The bold text within the brackets indicates the item or area ...

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

Training: Sign in to office.com with your Microsoft personal, work, or school account. Watch this video to learn how.