Find operating system info in Windows 8.1 or Windows RT 8.1. To find out which version of Windows your device is running, press the Windows logo key key + R, type winver in the Open box, and then select OK.. If your device is running Windows 8.1 or Windows RT 8.1, here’s how to learn more:

只要其中一个表具有与所有其他表共有的字段，就可以使用 VLOOKUP 将多个表合并为一个表。 如果需要与使用较旧版本的 Excel 的人共享工作簿，且旧版本不支持将多个表作为数据源的数据功能，这会特别有用 - 通过将源合并到一个表中并将数据功能的数据源更改为新表，则该数据功能可在较旧版本的 ...

Learn about cloud gaming on Xbox using your Android, iOS, or Windows device.

Important: Before trying any of the solutions below, make sure you back up your personal files. You can back up your Windows PC, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive.If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.

Note: If it’s been fewer than 10 days since you upgraded to Windows 10, your previous version of Windows will be listed as a system file you can delete.If you need to free up drive space, you can delete it, but keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows.

Was geschieht, nachdem Sie eine Outlook-Datendatei repariert haben? Im Ordnerbereich wird möglicherweise ein Ordner namens Wiederhergestellte Persönliche Ordner mit den Standardordnern von Outlook oder ein Ordner mit dem Namen Elemente ohne Zuordnung angezeigt. Obwohl der Reparaturprozess möglicherweise einige der Ordner neu erstellt, können diese leer sein.

了解如何在 Microsoft Edge 中查看、管理和删除 Cookie。 如果你不希望第三方站点在你的电脑上存储 Cookie，则可以阻止 Cookie。 但是执行此操作可能会导致某些页面无法正确显示，或者可能会从站点收到一条消息，通知你需要允许 Cookie 才能查看该站点。

當您瀏覽網頁時，Microsoft Edge 可讓您輕鬆儲存密碼。 當您在桌面或行動裝置的Edge瀏覽器中輸入新密碼時，Microsoft Edge 會詢問您是否要記住您的使用者名稱和密碼。 下次您瀏覽該網站時，瀏覽器會為您填入帳戶資訊。

The new Microsoft Edge will delete your browsing history, cookies, and site data, as well as passwords, addresses, and form data when you close all InPrivate windows. You can open an InPrivate window in different ways: Select and hold (right-click) the Microsoft Edge logo in the taskbar and select New InPrivate window.

The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.