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

Here are a few different ways to find help for Windows. Search for help - Enter a question or keywords in the search box on the taskbar to find apps, files, settings, and get help from the web.

If you selected the Show icon on my profile check box but the icon still isn’t displaying, sign out of the device where you have the issue and then sign back in. On a PC, you may also be required to restart the app: Start Task Manager, choose the app that’s running (Game Bar or Xbox app), select End task, and then restart the app.

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

Change the application's high-DPI scaling mode. In the High DPI scaling override area, select Override high DPI scaling behavior, and then try one of the following options:. Application – Disable all Windows scaling settings and only use the app developer's setting. This option was called Disable display scaling on high DPI settings in previous versions of Windows.

Upload captions and transcripts Upload your own WebVTT captions and transcript file by selecting Video settings in the upper right of the web player.Expand the Transcripts and captions section if closed, then select Upload.In the dialog that appears, select the language of the file you’re uploading.

Improvements and fixes included in this update. A downloadable Excel workbook that contains a summary list of builds, together with their current support lifecycle, is available.

Try these steps if you’re having trouble buying apps, games, or downloads from the Microsoft Store.

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Note: If your version is newer than those listed below, it’s because there may be a delay between when versions start rolling out and when they are updated on this page.