Find out how to download and install Office 2016 on your PC or Mac, or reinstall it if you already have a product key. Learn how to activate Office 2016 and troubleshoot common issues.

Learn different ways to remove apps and programs from your Windows 10 or 11 device. Find tips for troubleshooting, repairing, and protecting your system from malware.

Learn how to use the System File Checker tool (SFC.exe) to scan and restore Windows system files that are not working or causing crashes. Follow the steps to run SFC.exe, view the scan results, and manually replace the corrupted files if needed.

Learn how to download and install Microsoft 365 apps like Word, Excel, Teams, and PowerPoint on your PC or Mac. Follow the instructions in the browser and sign in with your Microsoft 365 account to activate the apps.

Learn how to use the Microsoft Authenticator app as a two-step verification method for your work or school account. Follow the steps to scan a QR code, add your phone number, and get a verification code or a notification on your mobile device.

Learn how to view, install, and change settings for add-ins that enhance your productivity in Excel, PowerPoint, and Word. Find out how to deal with add-in security, compatibility, and device access issues.

Learn how to view and delete your Microsoft Edge browsing history, cookies, passwords, and other data on your device, across synced devices, and in the cloud. You can also clear Internet Explorer browsing data using Microsoft Edge.

如果这是你第一次安装 Microsoft 365，则可能需要先执行一些设置步骤。展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“登录并安装 Office”的部分。

Learn how to access SharePoint, a browser-based app for online collaboration and document management, through your web browser. Find out how to check your subscription, troubleshoot issues, and get training for SharePoint.

Learn how to download, update, remove, pause, and change the save location of OneDrive on your Windows 10 or 11 PC. Find help for your Microsoft account, subscriptions, and technical issues.