Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

激活有助于验证你的 Windows 副本是否为正版，且未在超过 Microsoft 软件许可条款所允许数量的设备上使用。 如果无法激活激活Windows 11，激活疑难解答可以提供帮助。

Send in your Surface. If none of the previous solutions have resolved your issue, you can send in your Surface. If you decide to send it in, go to Device service and repair and sign in with your Microsoft account. If your device is already registered, select it and follow the instructions.

Note To use many of the Xbox features within Game Bar, including Xbox Social features, you must have the Xbox app for Windows installed. To use Xbox Social features, sign in to Game Bar with your Microsoft account. Press the Windows logo key + G to open Game Bar, choose Settings > Accounts, select Sign in, and then follow the steps.

尚未运行 Windows 11？ 请参阅激活 Windows或激活 Windows 7 或 Windows 8.1。. 尝试“激活疑难解答” 如果运行的是 Windows 11，并且最近更换了重要的硬件（如更换主板）或重新安装了 Windows，则“激活疑难解答”有可能帮助重新激活 Windows。

Learn how to download, customize, and troubleshoot Windows Media Player 12 with helpful guides and tips.

Choose the required access permission for the selected extension: When you click the extension: This setting only allows the extension to access the current site in the open tab or window when you click the extension.If you close the tab or window, you’ll have to click the extension to turn it on again.

Change Internet Explorer settings. There are many changes you can make to customize your browsing experience in Internet Explorer. To view all settings and options, open Internet Explorer on the desktop, select Tools > Internet options.. Reset Internet Explorer settings

Where your best groups chat. GroupMe is the easy way to connect with all the groups in your life, big and small. With apps on iOS, Android, and Web, GroupMe keeps you connected with the people most important to you.

Unhide a chat. Need to see a hidden chat again? Unhide a chat that you've hidden before by using search. In the Search box at the top of Teams, search for the name of the person you were chatting with and select them. You'll see that the chat history is hidden (which you can choose to show by selecting it).