如果这是你第一次安装 Microsoft 365，则可能需要先执行一些设置步骤。展开下面的 “了解详细信息”部分。 但是如果是重新安装 Microsoft 365，且已兑换了产品密钥并拥有与 Microsoft 365 相关联的帐户，请转到“登录并安装 Office”的部分。

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.

若要在 Outlook.com 中获取支持，请单击此处或选择菜单栏上的帮助，然后输入查询。 如果自助服务无法解决问题，请向下滚动到“仍需要帮助？”，然后选择“是”。 若要在 Outlook.com 中联系我们，需要登录。

Features with audio and video functionality.. Many features that come as part of Windows can be used to view or play video or audio content. Here are some examples: OneNote app (lets people record or play audio), Microsoft Edge web browser (lets people play audio and video content on the internet), the Photos app, the OneDrive app, and others.

Under Edit signature, compose your signature.You can change fonts, font colors, and sizes, as well as text alignment. If you want to create a more robust signature with bullets, tables, or borders, use Word to create and format your signature text, then copy and paste it into the Edit signature box.You can also use a pre-designed template to create your signature.

Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default settings and basic device drivers aren't causing the issue.

To change your screen resolution, use the drop-down menu under Display resolution.. Note: You should use the Recommended resolution. If you change the resolution, content might appear blurry or pixelated.

An upgrade differs from an update in that it moves your PC from a previous version of Windows—such as Windows 10—to Windows 11. This FAQ is intended to answer questions about upgrading to Windows 11.

With online threats getting more advanced day by day, it is important to prioritize the safety of your web browsing. Microsoft Edge offers several features and practices that can enhance your online security and protect your personal information.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.