当应用程序试图访问该 URL 时，它始终返回一个 HTTP 404 错误。 修补程序信息 重要：安装此修复程序后，则无法安装语言包。 如果那样的话，将不会应用此热修复程序中的特定于语言的变化，和您将需要重新安装此修复程序。

When an application tries to access this URL, it always returns an HTTP 404 error. Hotfix information Important Do not install a language pack after you install this hotfix. If you do, the language-specific changes in the hotfix will not be applied, and you will have to reinstall the hotfix. For more information, see Add language packs to Windows.

Describes that a blank page or "404 – Not Found" error prints when you try to print a frame in Internet Explorer versions 9 through 11 after you install KB 4021558.

In this situation, when users try to access Outlook Web App, Outlook on the Web, or the Exchange Administration Center (EAC), they receive an "Http 404" error code.

Learn how to protect your PC, identity, and data from tech support scams.

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Learn more about the advanced security features for Outlook.com that come with an Office 365 Home or Office 365 Personal subscription.

Try these solutions if sent messages in Outlook.com come back with a "delivery failed" error.

在 Windows、Android 或 iOS 裝置上使用遠端桌面，從遠端連線到 Windows 電腦。 以下是如何設定您的電腦以允許遠端連線，然後連接到您設定電腦。

GroupMe supports emoticon keyboard shortcuts on desktop and web. When you type :-) as well as many others, it's converted into a GroupMe emoticon. Here's a list of the emoticon keyboard shortcuts.