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This security update includes fixes and quality improvements that are part of the following updates: August 11, 2026—KB5120249 (OS Builds 19045.7663 and 19044.7663) The following is a summary of the issues that this update addresses when you install this update. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are ...

Here are the most likely causes for an unrecognized charge: A Microsoft subscription has recurring billing enabled. Someone you know, such as a family member, bought something with your card. You can now investigate this on the Manage your payments page. A previously declined charge was charged again. A pre-order or split order was shipped. Someone made an in-app purchase from an app, game, or ...

Find out how to submit a request for a refund for a purchase of digital XBOX content.

This out-of-band (OOB) update for Windows Server 2025 (KB5129235) is a non-security cumulative update. Improvements This out-of-band update contains quality improvements from KB5122871 (released September 8, 2026). The following summary outlines key issues addressed by this out-of-band update. The bold text within the brackets indicates the item or area of the change. [Remote Desktop Services ...

This Hotpatch update for Windows 11, version 25H2 and 24H2 (KB5120994) includes security improvements. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information on Windows update terminology, see the different types of Windows software updates. To ...

Windows Server 2019 Windows 10、バージョン 1809 適用対象: Windows Server 2019 このセキュリティ更新プログラムには、次の更新プログラムの一部である修正プログラムと品質強化が含まれています。 2026 年 5 月 12 日 — KB5087538 (OS ビルド 17763.8755) 以下は、この更新プログラムをインストールしたときにこの ...

The May 12, 2026 update for Windows 11, version 25H2 and Microsoft server operating system 24H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security Improvements CVE ...

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

激活是将产品密钥或数字权利与设备的硬件配置配对的技术过程。 这不会评估副本本身的真实性，也不保证 Windows 副本是 正版。 它仅确保产品密钥或数字权利对硬件配置有效。 另一方面，验证是检查关键 Windows 许可文件是否未损坏、删除或删除的过程，以及是否必须接收某些更新和下载。