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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.

For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.

Microsoft Outlook automatically groups items by date. However, you can also group items manually by using standard arrangements or by creating your own custom grouping. While you may be most familiar with the default groups in your Inbox, these groups are also applied to other mail folders.

To see self-help answers, or to get support via email, Select Help from the top menu then Help. Open the Help pane. Enter your question or issue in the Search Help box on the right, and then press Return. If the self-help answers don't resolve your issue, try a different search, or scroll to the bottom of the Help pane and, under Still need ...

Reduce the size of pictures and attachments in Outlook email messages. Send large files by using file sharing, cloud services, or other solutions for working around file size limits in Outlook.

Move your files to a new Windows PC. If you're making the move to a new PC, you don't have to leave behind your photos, videos, files, and folders. You can bring them all with you to your new PC using one of the following options. We recommend using OneDrive to quickly save your files in the cloud.

Most of the time, only an administrator will need to view internet headers for a message. If you want to add a header to your email message, see Apply stationery, backgrounds, or themes to email messages. Some senders use spoofing to disguise their email address.

If updates are available, you can install them. There are a few ways to export and delete your data in Microsoft Teams (free). You can export all data or follow the steps below to export specific content. Note: These sections apply to Microsoft Teams (free) only.

Find the information you need to import to or exporting from Outlook, whether you're using Office 365, Outlook 2016, or a Mac.