Learn how to open and close Outlook Data Files (.pst) that contain copies, archives, or backups of your Outlook information.

In Outlook, sometimes your outgoing messages get stuck in your outbox and just won't send. Learn about some ways to get them moving.

Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification

Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.

Select the message you want to view. You can search email quickly by using the search option. Search by using keywords used in the message or by using someone’s name.

Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification

Download printer drivers. If your printer isn't responding, you may need to remove it and reinstall it so Windows can download and install the proper drivers.

Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.

Office または Microsoft 365 を購入したときにプロダクト キーが付属していた場合は、使用している製品に対応する以下の Web サイトのいずれかにプロダクト キーを入力します。

Learn how to view your PC information on Windows with Microsoft Support's step-by-step guide.