Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

若要访问登录选项，请依次转到“开始” > “设置” > “帐户” > “登录选项”。 或者直接单击此按钮： 转到“登录选项” 更改或管理密码或 PIN. 若要更改密码或 PIN，请转到“开始 > 设置> 帐户 ”> 登录选项。. 选择“PIN (Windows Hello)”，然后选择“更改 PIN”。

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).

Notlar: Hotmail veya Outlook.com parolanız Microsoft Hesabı parolanızla aynıdır. Oturum açabiliyorsanız ancak Outlook.com ile ilgili sorun yaşıyorsanız hizmet durumunu kontrol edin. Durum yeşil değilse, hizmetin normal çalışır duruma gelmesini bekleyin ve yeniden deneyin.

IMPORTANT This update is not needed and will not be offered if your Windows Recovery Environment (WinRE) meets any of the following conditions: If the WinRE recovery partition does not have sufficient free space.

Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date; Requests are for games in which you haven’t accumulated a significant amount of play time

Select Notifications to expand it, and turn notifications, banners, and sounds on or off for some or all notification senders.

When you’re away from your console or your Windows 10/11 device, you can still get ready to play your next Xbox console game. Use the Xbox mobile app, the Xbox Game Pass app, or the Microsoft Store on PC to remotely install games—so your games are ready when you are.

Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed