Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

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

Secure Boot helps ensure that your device starts using trusted software. The Microsoft Secure Boot certificates originally issued in 2011 begin expiring in June 2026. To maintain protection against new boot‑level threats, Microsoft is updating devices with a new set of 2023 certificates. Most devices will receive these updates automatically, but some systems may require additional firmware ...

价值声明 在 Microsoft，我们了解到有时无法按计划购买数字游戏产品。 如果发生这种情况，您可以放心，我们将公平对待，倾听您的疑虑，如果需要，我们会协助您申请退款。 我们致力于清楚地传达我们的政策，并使我们的流程简单易懂。 您的反馈意见可帮助我们不断提升游戏体验。 让我们知道 ...

You can also track your order in the confirmation email that was sent to the primary email address on your Microsoft account. If you didn't receive a confirmation email, select Resend on the Order History page to get another copy sent to you. If you need to change that primary email address, see Change my Microsoft Rewards primary email. Why was my Microsoft Rewards order cancelled? We’re ...

了解如何升级或降级 Xbox Game Pass 或 EA play 订阅级别。

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

了解如何要求更換 Xbox 控制器。 如果您的控制器無法正常運作，並且需要更換，請在此頁面底部輸入控制器序號。 您可以在電池槽內側的條碼下方找到控制器序號。 注意事項：

Note Cowork is currently rolling out to Frontier early access for Microsoft 365 plans with Copilot licenses in select markets and languages, starting with the United States and English (en-us). Expanded access is coming soon. Frontier includes early access to experimental features, which means features may change as Microsoft improves them.

如何變更玩家代號？ 我們已將新的 Xbox 玩家代號更新為支援最多 12 個字元的 Unicode 玩家自選名稱，而此名稱還會在您分享玩家代號時加上自動產生的尾碼。 我們為玩家提供 13 個不同的字母系統，支援全球超過 200 種語言。