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.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.

如果要续订附带新产品秘钥的 Microsoft 365 订阅，请使用先前与已过期版本订阅关联的同一 Microsoft 帐户。. 完成此操作后，每当需要安装或重新安装 Microsoft 365 或 Office 时，可以直接转到下一部分 ，然后选择选项卡以获取在电脑或 Mac 上安装的帮助。. 请务必使用 ...

If you're looking for Help on specific Excel Add-ins, such as Solver or Inquire, see Help for Excel for Windows add-ins. If you're looking for additional help with Excel add-ins using the COM Add-ins dialog box, see Add or remove add-ins in Excel. Get a Microsoft 365 Add-in for Excel.

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.

Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device.

Press the Xbox button to open the guide, and then select Profile & system > Settings. Select Preferences > Capture & share, then choose one of the 4K options listed under Game clip resolution. Once you've updated your capture settings, you're ready to start capturing.

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.

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