Windows Media Player 12 - Microsoft Support
Play music and video in more formats and stream it to more places with Windows Media Player 12.
更改幻灯片的大小 - Microsoft 支持
选择“ 幻灯片大小”，然后选择“ 标准 (4：3) ”或“ 宽屏 (16：9) ”。 当 PowerPoint 无法自动缩放内容时，它会提示你两个选项： 最大化：选择此选项以在缩放到较大的幻灯片大小时增大幻灯片内容的大小。选择此选项可能导致你的内容不能全部显示在幻灯片上。
Applies To:
PowerPoint for Microsoft 365, PowerPoint for Microsoft 365 for Mac, PowerPoint for the web, PowerPoint 2021, PowerPoint 2021 for Mac, PowerPoint 2019, PowerPoint 2019 for Mac, PowerPoint 2016
Create or edit a hyperlink - Microsoft Support
Add or edit hyperlinks to web sites, local files, email messages, or anchor points in your document.
Applies To:
Word for Microsoft 365, Outlook for Microsoft 365, Project Online Desktop Client, Word 2021, Outlook 2021, Project Professional 2021, Project Standard 2021, Word 2019, Outlook 2019, Project Professional 2019, Project Standard 2019, Word 2016, Outlook 2016, Project Professional 2016, Project Standard 2016, Office 2016, InfoPath 2013, InfoPath Filler 2013
Dark Mode in Outlook - Microsoft Support
In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if you prefer.
Applies To:
Outlook for Microsoft 365, Outlook on the web, Outlook.com
Download Internet Explorer 11 (Offline installer) - Microsoft Support
To download the offline installer for Internet Explorer 11, choose your language and system below.
I can't sign in to my Microsoft account - Microsoft Support
Learn how to fix problems signing into your Microsoft account. Resolve password verification, locked account, and other Microsoft account login issues.
Applies To:
Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Microsoft 365 for home, Outlook.com, GroupMe, Microsoft account dashboard, Microsoft Teams, Microsoft Teams personal, Microsoft To Do, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows, Outlook for Android, Outlook for iOS
Windows 10 and Windows 11 in S mode FAQ - Microsoft Support
Get answers to common questions about Windows 11 and Windows 10 in S mode.
Keyboard shortcuts for Outlook - Microsoft Support
Use keyboard shortcuts in Outlook to manage your email, tasks, contacts, meetings, and more. The shortcuts in this article refer to the US keyboard layout.
Applies To:
Outlook for Microsoft 365, Outlook for Microsoft 365 for Mac, Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook on the web, Outlook.com, New Outlook for Windows, Outlook for iOS, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019, Outlook Web App
Add or subtract dates - Microsoft Support
Add or subtract days, months, or years from a date by using a formula or date functions in Excel.
Applies To:
Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Encrypt email messages - Microsoft Support
Add additional privacy protection to email messages with encryption.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016