If you have a digital gift card that's good for a game or app, see Redeem a gift card or code to your Microsoft account. To buy an app or game, visit Microsoft Store online, on Windows and Xbox. If you bought your Microsoft software from a third-party website, you'll need to get download and product key info from them.

SharePoint is a browser-based app that you connect to through your web browser, like so: Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

It's best to let Windows install drivers automatically. Occasionally, Windows might not be able to find a driver for your device. If this happens, you might want to check the manufacturer's website for a driver or update for the device, or try installing any software that came with the device.

Xbox Game Pass Ultimate includes all benefits of Xbox Game Pass Core, which gives you access to multiplayer games on your console. (Free-to-play games include online multiplayer without an Xbox Game Pass Core subscription.) Windows games in the catalog don’t require a separate subscription for online multiplayer gaming.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.

Change or delete a header or footer from another single page. To delete or change headers and footers on individual pages within a document, start by inserting a section break. Important: Section breaks are different from page breaks.

Xbox Game Pass 任务是仅当你具有 Xbox Game Pass 成员身份时，才为你提供 Microsoft Rewards 积分的活动。. 若要在 Xbox 移动应用中赢得 Microsoft Rewards 积分，无需拥有 Xbox Game Pass 成员资格即可参与。. 你可以从 Xbox 移动应用和 Xbox Game Pass 任务中获得积分。.

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