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Defragment your Windows 10 PC - Microsoft Support
Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
Why can't I activate Windows? - Microsoft Support
If your PC was repaired or rebuilt, it's possible that a different version of Windows was installed. Or, if a different product key was used for your PC during repair, that key might have been used on more PCs than allowed by the Microsoft Software License Terms.
Printing and print preview - Microsoft Support
Note: When you use File > Print to display the Print view, which contains both printer settings and print preview, the current window may shift to the background behind the main Outlook window. You can minimize the main Outlook window to bring the Print view back to the foreground. For more information on this problem, see Print preview problems in Outlook.
Applies To: Word for Microsoft 365, Outlook for Microsoft 365, Word 2021, Outlook 2021, Project Standard 2021, Word 2019, Outlook 2019, Project Standard 2019, Word 2016, Outlook 2016, OneNote 2016, Project Standard 2016
About Microsoft Rewards status levels - Microsoft Support
Microsoft Rewards has two status tiers: Level 1 and Level 2. Earn and keep Level 2 status by reaching 500 Microsoft Rewards points each month - no matter how you earn points, they all count toward your status.
Use the dark theme in Microsoft Edge - Microsoft Support
The dark theme changes the default bright background color in the new Microsoft Edge to a darker color, which is easier on the eyes in low-light environments or if you prefer less bright interfaces. Here's how to activate dark mode: Go to Settings and more > Settings .
Insert a check mark symbol - Microsoft Support
You can easily insert a check mark (also known as a "tick mark") in Word, Outlook, Excel, or PowerPoint. These marks are static symbols. If you're looking for an interactive check box that you can click to check or uncheck, see: Add a check box or option button (Excel) or Make a checklist in Word. In your file, place the cursor where you want to insert the symbol.
Applies To: Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016
Create an email signature - Microsoft Support
Try it! Create custom signatures that can be automatically added to your email messages. Email signatures can include text, images, your electronic business card, a logo, or even your handwritten signature.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
为升级 Windows 11 准备就绪 - Microsoft 支持
安装 Windows 11. 在针对你的特定电脑测试和验证 Windows 11 升级后,Windows 更新将指示它已准备好安装。 若要检查 Windows 11 是否已为你的设备准备就绪,请转到“开始” “设置” >“更新和安全性” >“Windows 更新” ,然后选择“检查更新”。 如果升级适用于你的设备,并且想要继续,请下载并安装它。
Insert a symbol in Word - Microsoft Support
Scroll up or down to find the symbol you want to insert. Different font sets often have different symbols in them and the most commonly used symbols are in the Segoe UI Symbol font set. Use the Font selector above the symbol list to pick the font you want to browse through.
Applies To: Word for Microsoft 365, Word 2021, Word 2019, Word 2016
Use the Analysis ToolPak to perform complex data analysis
The CORREL and PEARSON worksheet functions both calculate the correlation coefficient between two measurement variables when measurements on each variable are observed for each of N subjects. (Any missing observation for any subject causes that subject to be ignored in the analysis.) The Correlation analysis tool is particularly useful when there are more than two measurement variables for ...
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016