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.

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Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

瞭解如何在行動裝置、Windows 裝置或 Xbox 主機上兌換 Microsoft/Xbox 禮品卡或其他代碼。

如何兌換禮品卡、Xbox 下載代碼或權杖 Microsoft 和 Xbox 禮品卡、下載代碼和令牌的運作方式相同：兌換到您的 Microsoft 帳戶後，您可以在 Microsoft Store 網路商店、Windows 或 Xbox 上花費餘額，並且您可以下載最新的應用程式、遊戲、電影和電視節目。 在大多數國家或地區，您也可以購買 Surface、Xbox 和配件 ...

Learn how to protect your PC, identity, and data from tech support scams.

如果您嘗試使用您的 Microsoft 帳戶餘額購買遊戲或附加內容，您的帳戶中可能沒有足夠的資金可支付商品的總額。 例如，如果嘗試購買標價為 9.99 美元的遊戲，而您的 Microsoft 帳戶餘額為 10.00 美元時，該金額會不足以支付稅金，因此您需要加入更多資金支付總餘額。

取得您用於 Microsoft 之帳戶的說明。 瞭解如何設定 Microsoft 帳戶、保護它，以及如何使用它來管理您的服務和訂閱。

Learn how to cancel Xbox subscriptions, manage recurring billing, and stop future charges while retaining benefits until the subscription expires.