Find and use a calendar template for PowerPoint. Learn how to use a PowerPoint calendar template to insert a calendar on a slide.

Learn how to add security information to protect your Microsoft account.

Solution 1: Restart your Windows device and try again Restart your device but make sure you are the only account signed in to the device. Then try the installation or download again.

此适用于 Windows 11 版本 25H2 和 24H2 (KB5120998) 的累积更新包括生产质量改进。 公告和消息 本部分提供与此版本相关的重要通知，包括公告、更改日志和终止支持通知。 Windows 安全启动证书过期 重要提示： 大多数 Windows 设备使用的安全启动证书从 2026 年 6 月开始过期。 在过去的几个月里，Microsoft 一直 ...

XBOX Support offers help for XBOX, Game Pass, and billing questions. Get advice and customer service in the XBOX Support community.

Find out how you can change your Microsoft account password.

Error code 121003 means there is a problem related to connecting to the Xbox servers. Find out how to fix error code 121003.

The August 11, 2026 update for Windows 11, version 23H2 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-2026-65810 - .NET Framework Elevation of ...

The May 26, 2026 update for Windows 11, version 25H2 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 There are no new security improvements in this ...

If your controller isn't working and needs replacing, enter the controller's serial number at the bottom of this page. You can find the serial number inside the battery compartment, below the barcode.