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Download and install apps - Microsoft Support
Learn how to download and install apps you need from your Microsoft 365 business subscription.
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
How to sign in to or out of Outlook.com - Microsoft Support
Learn how to sign in or out of your Outlook.com email account, and get solutions for common login issues.
适用于: Outlook.com
Switch to the new Microsoft Teams - Microsoft Support
In the new Teams, you can switch between apps, respond to chat messages, and join meetings and calls more quickly while using less battery and memory.
适用于: Microsoft Teams
Fix sound or audio problems in Windows - Microsoft Support
If you’re having sound or audio problems, the following suggestions might help. The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t.
Use System Restore - Microsoft Support
Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually.
Start your PC in safe mode in Windows - Microsoft Support
Find out how to boot into safe mode in Windows from Settings, the sign-in screen, and a black or blank screen.
Add a printer or scanner in Windows - Microsoft Support
Learn how to add a printer or scanner in Windows. If your printer connects by a wire, plug it into your device. It'll connect automatically, your PC will download the right drivers, and you can use it right away.
How to sign in to Hotmail - Microsoft Support
Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.
适用于: Outlook.com
Media Feature Pack for Windows 10/11 N (September 2022)
Summary. This update provides support for media features in Windows 10/11 N. These include media-related technologies (Windows Media Player) and certain pre-installed media apps, such as Movies & TV, Voice Recorder, and Skype.