Certificate authority (CA) A certificate authority is an entity similar to a notary public.It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.

Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.

Select the Start button, then go to Settings > Personalization > Lock screen, and select Screen saver settings.In the Screen Saver Settings window, choose a screen saver from the drop-down list. Change your screen saver settings

Edit photos and videos. Whether you like to apply changes that affect your photo's quality, feel, and look—or you want to add information on top of your photos, the Photos app offers you comprehensive features to transform your photos and videos looking their best.

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Shape data appears in the Properties dialog on the Shape Properties tab. If this tab is blank, the shape doesn't include any data. Print a drawing from Visio Viewer. When you print a Visio drawing with Visio Viewer, it prints from your web browser, not from Visio.. Set up your view of the diagram with the same zoom factor and center point in your browser window that you want to use on the ...

List view. A unique feature of the Tasks app how it displays tasks and information associated with them in rows and columns. This is called List view, and allows you to change many tasks at once, which wasn't as possible in either To Do or Planner before.

Copilot は、既存のテーマとテンプレートを使用してプレゼンテーションを作成できます。 詳しくは、PowerPoint で Copilot でプレゼンテーションを見栄え良くするをご覧ください。 テーマを使用して既存のプレゼンテーションを開くか、[ファイル]、[新規作成] の順に移動するか Office.com からテーマ ...

Use a macro to extract data from a corrupted workbook If a chart is linked to the corrupted workbook, try using a macro to extract the source data of the chart.. Copy the following macro code and paste it in a module sheet: Sub GetChartValues() Dim NumberOfRows As Integer