Learn how to reinstall Windows on your PC and how activation works after it's installed.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Find out more about Xbox digital codes and gift cards, and how to troubleshoot issues redeeming content.

Find out how to manage your Xbox subscriptions to request a refund or cancel a recurring payment.

When you’re connected to the internet and using a proxy server while browsing the web, that traffic goes through the proxy server instead of coming directly from your Windows 11 PC.

Learn how to use eye control in Windows to type with an on-screen keyboard, communicate with people, and control the mouse with your eyes.

Windows 11, phiên bản 21H2; Ngày 9 tháng 7 năm 2024—KB5040431 (HĐH Bản dựng 22000.3079) Ngày 11 tháng 6 năm 2024 – KB5039213 (Bản dựng HĐH 22000.3019)

Learn how to get started with PowerPoint for the web from Office.com and create presentations online.

Learn how to activate Windows using an internet connection, automated system, or live support advocate.

Summary. This security update makes improvements to Secure Boot DBX for the supported Windows versions listed in the "Applies to" section. Key changes include the following: