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.
Start your PC in safe mode in Windows - Microsoft Support
Select from the following sections to find out how to start your PC in safe mode from Settings, from the sign-in screen, or from a black or blank screen. Windows 11 Windows 10. Notes: Restarting your device should be sufficient to exit you from Safe Mode back into normal mode.
Advanced startup options (including safe mode) - Microsoft Support
Advanced startup options (including safe mode) Windows 7. The Advanced Boot Options screen lets you start Windows in advanced troubleshooting modes. You can access the menu by turning on your computer and pressing the F8 key before Windows starts. Some options, such as safe mode, start Windows in a limited state, where only the bare essentials ...
Open Outlook in safe mode - Microsoft Support
If Outlook won't open, try opening it in safe mode, which disables add-ins. 1. Right-click the Start button, and click Run. 2. Type Outlook.exe /safe, and click OK. Tip: If Windows can't find Outlook.exe /safe, try using the full path to Outlook (for example C:\Program Files\Microsoft Office\OfficeXX, where XX is your version number).
Windows 10 and Windows 11 in S mode FAQ - Microsoft Support
Windows 11 in S mode is a version of Windows 11 that's streamlined for security and performance, while providing a familiar Windows experience. To increase security, it allows only apps from Microsoft Store, and requires Microsoft Edge for safe browsing.
Outlook add-in warnings - Microsoft Support
If Outlook detects a problem with an add-in, you can uninstall and reinstall the add-in. If that doesn't solve the issue, contact the company that supplied the add-in. For most add-ins, you can find the company that supplied the add-in by selecting File > Add-ins.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Avoid and report Microsoft technical support scams
If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.
Add recipients of my email messages to the Safe Senders List
You can add your Contacts and other correspondents to the Safe Senders list to confirm you'll always receive their messages in your inbox. By default, email addresses in your Outlook contacts are considered safe senders by the Junk Email Filter, but you can change this setting.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013
Safe Senders in Outlook.com - Microsoft Support
Safe Senders in Outlook.com. To ensure messages from known addresses or domains don't get moved to your Junk Email folder, add them to your safe senders list: Open your Safe Senders settings. Under Safe senders and domains, enter the email address or domain you want to add, and select Add.
Applies To: Outlook.com
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。.