Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.
激活 Windows - Microsoft 支持
若要在 Windows 11 中检查激活状态,请选择“开始 ”按钮,然后选择“设置 > 系统 ” ,然后选择“激活 ”。 。 激活状态将在“激活”旁边列出。 在“设置”中检查激活状态. 你将在“激活”页面上看到以下一条激活状态消息:
What's new in Office 2021 - Microsoft Support
Immersive Reader advanced color support. In Immersive Reader, we've added many additional ways you can choose a page color.Selecting a page color can make text easy to scan with less eye strain. On the Immersive Reader tab click Page Color to see a 4x5 color picker.. Click More Colors to see additional color selection options such as Wheel, Sliders, Color Palettes, Image Palettes, and Pencils.
Applies To: Office 2021, Office 2021 for Mac
Welcome to Copilot on Windows - Microsoft Support
At Microsoft, we're guided by our AI principles, our Responsible AI Standard, and decades of research on AI, grounding, and privacy-preserving machine learning.Data privacy and security is a key principle of responsible AI. We aim to help our customers use our AI products responsibly, sharing our learnings, and building trust-based partnerships.
Fix microphone problems - Microsoft Support
If you want to give access to desktop apps, make sure that Let desktop apps access your microphone is turned on.You can't turn off microphone access for individual apps. Others can't hear me. Try the following solutions:
KB4023057: Update Health Tools—Windows Update Service components
Important: If your device is out of support, it is no longer receiving security updates from Microsoft and may become more vulnerable to security risks and viruses.Therefore, we strongly recommend that you update to the latest version of Windows. Each version of Windows is supported for 18 months.
Change the refresh rate on your monitor in Windows
Battery Life: Lowering your refresh rate can save battery power by reducing the amount of energy your display consumes.This can be useful when you are using a laptop or tablet and want to extend your battery life.
Check your device performance and health in Windows Security
The Health report starts off by showing you the last time a Device Health scan was run. The time displayed should be basically the current time, as Windows Security tries to run a Device Health scan when you open the Device performance & health page.. Beyond the time of last scan you'll see the status of the key areas that Device Health monitors:
Getting the most out of your PC backup - Microsoft Support
When you back up your files, apps, and settings in the cloud using your Microsoft account, you get 5 GB of free cloud storage and other benefits that protect your files with the latest security and make everyday tasks easier.
Microsoft account security info & verification codes
Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).
Applies To: Microsoft account dashboard
App permissions - Microsoft Support
Here's more info on what permissions allow an app to do: Access all your files, peripheral devices, apps, programs, and registry: The app has the ability to read or write to all your files (including documents, pictures, and music) and registry settings, which allows the app to make changes to your computer and settings. It can use any peripheral devices that are either attached or part of ...