Use the System File Checker tool to repair missing or corrupted system ...
If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.
Update drivers manually in Windows - Microsoft Support
Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.
Phishing and suspicious behavior in Outlook - Microsoft Support
Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof Intelligence from Microsoft 365 Advanced Threat Protection and Exchange Online Protection help prevent phishing messages from reaching your Outlook inbox.
Applies To: Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook on the web, Outlook.com, New Outlook for Windows
Update your security processor (TPM) firmware - Microsoft Support
Update your security processor (TPM) firmware. Security Windows 10 Microsoft Defender Antivirus. If you receive a message in Windows Security prompting you to update your security processor or TPM firmware, follow the steps in the "Recommended actions" section below.
File sharing over a network in Windows - Microsoft Support
To share a file or folder over a network in File Explorer, do the following: Right-click (or long-press) a file, and then select. Select a user on the network to share the file with, or select. If you select multiple files at once, you can share them all in the same way.
Pair a Bluetooth device in Windows - Microsoft Support
Swift Pair in Windows 11 lets you quickly pair a supported Bluetooth device with your PC. If the Bluetooth device supports Swift Pair, you’ll receive a notification when it's nearby and you put it into pairing mode to make it discoverable. Turn on a Bluetooth device that supports Swift Pair and make it discoverable.
Sign in using Microsoft Authenticator - Microsoft Support
Sign in using Microsoft Authenticator. Microsoft Authenticator helps you sign in to your accounts if you've forgotten your password, use two-step verification or multi-factor authentication, or have gone passwordless on your account.
Product activation for Windows – online & support telephone numbers
There are three methods to which you can activate your product: Online via the internet, by telephone using our automated systems, and by a live support advocate. Online: When you begin activation, Windows will try to use your internet connection to activate online.
Troubleshooting black or blank screens in Windows
Fix connections to wireless displays or docks in Windows. If your computer is showing a black or blank screen in Windows, these troubleshooting tips could help get your system back up and running.
使用系统文件检查器工具修复丢失或损坏的系统文件 - Microsoft 支持
本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。.