Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. If you’ve lost or can’t find the product key, contact the manufacturer. To ensure your product key is ...

Info for Windows Insiders. If you’re an Insider and the current preview build isn’t working for you, select Start > Settings > System > Recovery .Next to Go back , select Go back.This won’t remove your personal files, but it’ll remove recently installed apps and drivers, and change settings back to their defaults.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Help with BitLocker. Finding product keys for Windows and Office. Other support. Help with a work or school account password. I need to talk to a customer support agent. Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

此错误代码可能表示以下情形之一：. 你的银行未授权你的支付选项（例如，你的信用卡已过期、被冻结或者已被拒绝）。. 请联系你的信用卡公司或银行，确保正在使用的支付选项已激活，具有可用资金，且交易并未因为某些原因而受到阻止。. 如果用于为 Xbox ...

作爲訂閲的一部分，Xbox Game Pass Ultimate 和 PC 會員可享受 10% 的 EA 數位購買 (完整遊戲、DLC 等) 折扣。Ultimate 會員可以在 Xbox 主機或 Xbox.com 上透過 Microsoft Store 購買主機遊戲，而 Ultimate 和 PC 會員可以透過 EA 應用程式 (現為 Beta 版) 購買 PC 遊戲。

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

在您進行遊戲時，按 Windows 鍵 + G 開啟 Game Bar。. 選擇 [小工具] 功能表 > [擷取]。. 選擇 [開始錄影]、[抓取螢幕擷取畫面] 或 [錄製最後…]。. 錄製最後一個…. 開啟背景錄影時，可將最近的遊戲過程片段變成遊戲短片。. 在 [Windows 設定] > [遊戲] > [捕捉畫面] 中設定 ...

Multiply numbers in different cells by using a formula. You can use the PRODUCT function to multiply numbers, cells, and ranges.. You can use any combination of up to 255 numbers or cell references in the PRODUCT function. For example, the formula =PRODUCT(A2,A4:A15,12,E3:E5,150,G4,H4:J6) multiplies two single cells (A2 and G4), two numbers (12 and 150), and three ranges (A4:A15, E3:E5, and H4 ...

您無法傳送做為數位禮物的遊戲. 以下是一些可能的原因: 您已達到可送出的數位禮物數量上限。. 此原則是為了保護我們的遊戲社群而制定。. 您最多可能需要等待 30 天，才能再試一次。. 此遊戲可能是無法以數位方式贈送的遊戲。. 檢查產品頁面。. 可做為禮物 ...