Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

降级订阅： Game Pass Ultimate 和 Game Pass Premium 可以降级到较低级别的订阅。 降级时，不会立即收费。 你当前的订阅将持续到下一个续订日期，然后变更为新订阅等级，并在该日期收取新订阅费用。

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 optional preview release. 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 ...

Upgrading to Game Pass Ultimate When you upgrade to Xbox Game Pass Ultimate, we'll convert any prepaid time you have on Xbox Game Pass or EA Play subscriptions and apply it toward Xbox Game Pass Ultimate at the current conversion ratio, up to a maximum of 36 months.

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Sign-in options Usage Guidelines URL: Privacy Policy URL: ...

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.

You can view your Xbox purchase history on your Xbox console or the web. Use the steps below to review your info or get help with a charge that you don’t recognise.

With Viva Engage on your PC, Mac, or mobile device, you can: Connect and engage across your organization. Tap into the knowledge of others. Use your Inbox to view, prioritize, and manage the most important messages and announcements. Search for experts, conversations, and communities. Join communities to stay informed, connect with your co-workers, and gather ideas. Participate in ...

Learn how to change how you pay for an Xbox subscription for you or a child account.