Note: If you start to play a DVD or VCD in the Player Library, the Player automatically switches to Now Playing mode. The Blu-ray Disc format is not supported in Windows Media Player. To play a Blu-ray Disc, you need to use a non-Microsoft program that supports Blu-ray playback and a device capable of reading Blu-ray Discs.

There are a number of possible explanations for why verification codes don't always arrive. Read through the list of the most common causes, and see if any of them apply to you, or use our troubleshooter to help guide you.

Get info on how to find your IP address in Windows. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Learn how to block someone or add email addresses to the safe senders list in Outlook on the web.

Find out how to connect your Xbox Wireless Controller to a Windows device.

If you want to track your Microsoft Rewards order after you redeem an award, sign in to the Rewards page with your Microsoft account, select Redeem and then select Order history.On the Order history page, find your order and then look under Status.. Open Rewards dashboard

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。

Get an overview of SharePoint. Learn about sites, lists and libraries, permissions, content types and workflows. In addition, read about some of the social features in SharePoint.

Hotmail が Outlook.com になりました。 サインインして、Outlook.com、Hotmail、Live、または MSN メール アカウントにアクセスする方法について説明します。