Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac. Set up Office apps and email on a mobile device. Small business help and learning. Learn how to download and install apps you need from your Microsoft 365 business subscription.

If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.

You can manage all of your Microsoft subscriptions in your Microsoft account dashboard. Select each subscription to change when and how you pay, or to see order history & receipts. Choose your account type.

Sign in to SharePoint. 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.

Possible causes. Make sure your PC, the external display, and the cable all support DisplayPort or MHL alternate modes. Make sure the device or dongle is connected directly to your PC. Make sure the device or dongle is connected to the USB-C port on your PC that supports the correct Alternate Mode.

If Update Options is missing and there's only the About button, you either have a volume license install or your company is using Group Policy to manage Office updates. Try Microsoft Update or contact your company help desk. To download an update manually, see Office Updates.

Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account. For Microsoft 365 Germany go to portal.office.de/account.

Depending on your product and if it's still in support, Microsoft support experts are available to help you with a broad selection of support options and able to address product and service challenges for a more personalized experience.

Most of the Microsoft 365 plans for business, schools, and non-profits include the fully installed desktop apps, but Microsoft also offers basic plans with the online versions of Microsoft 365, file storage, and email. You decide what works best for you: Small business, Enterprise, School, or Non-profit.

登录并下载 Microsoft 365. 转到 Microsoft 帐户仪表板， 如果尚未登录，请选择“ 登录 ”。. 使用与此 Microsoft 365 版本关联的 Microsoft 帐户登录。. 忘记了帐户详细信息？. 请参阅 我忘记了用于 Office 的帐户 。. 从“概述”页中选择“ Office 应用 ”，在该页面上找到要 ...