Download and install or reinstall Office 2019, Office 2016, or Office 2013. Office 2019 Office 2016 Office 2016 for Mac Office 2013. If this is the first time you're installing Microsoft 365 you may have some setup steps to do first. Expand the learn more section below.

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. Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page. You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with. If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

Find and open File Explorer in Windows 10 and Windows 11, and customize Quick access by pinning and removing files and folders.

Change or reset your PIN. A PIN is a user-defined set of numbers, or a combination of numbers and letters, that allows you to sign in to your Windows device instead of a password. Your PIN is securely stored on your device, it isn’t transmitted anywhere, and it isn’t stored on a server.

Xbox 收藏夹列表可以帮助你跟踪最亲密的好友。. 它可以让你迅速查看好友正在玩的游戏及其所处级别，甚至跳转到收藏夹级别中的操作。. 你还可以在活动信息提要的收藏夹部分进行查找，使用收藏夹列表与好友保持联系。.

To get help and troubleshoot other Microsoft products and services, enter your problem here . Post questions, follow discussions and share your knowledge in the Outlook.com Community. You can give feedback by selecting Help from the top menu, then Feedback.

If your PC is running low on free space, you might not be able to install important Windows updates, and your PC’s performance may be affected. Here are some ways to free up space so you can keep your PC up to date and running smoothly.

Open an Outlook data file. In order for Outlook to search a Personal Folders file for a specific word or phrase or sender, the file must be open in Outlook. In Outlook on your desktop, choose File > Open & Export > Open Outlook Data File. Choose the Outlook data file you want to open.