Create and send email in Outlook - Microsoft Support
Training: Get productive quickly with our Outlook Quick Start. Learn how to create and send email, and use @mentions to get someone's attention.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Microsoft account security info & verification codes
Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.
Applies To:
Microsoft account dashboard
激活 Office - Microsoft 支持
如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
How to recover a hacked or compromised Microsoft account
Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.
CONCATENATE function - Microsoft Support
Learn how to concatenate text strings in Excel using the CONCATENATE function. Our step-by-step guide makes it easy to join two or more text strings into one.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Troubleshoot problems signing in to Windows - Microsoft Support
Learn how to troubleshoot Windows sign in issues, including problems signing in to your Windows device after upgrading.
Browse InPrivate in Microsoft Edge - Microsoft Support
Learn how to use InPrivate browsing in Microsoft Edge if you don't want your browsing data saved on your PC.
Applies To:
Microsoft account dashboard
How to redeem Microsoft Rewards points - Microsoft Support
Learn how to redeem your Microsoft Rewards points for a huge variety of great products and sweepstakes.
Applies To:
Microsoft account dashboard
Account has been locked - Microsoft Support
Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.
كيفية استخدام تطبيق "التحقق من صحة الكمبيوتر" - دعم Microsoft
كيفية فتح التحقق من صحة الكمبيوتر. في Windows، استخدم البحث على شريط المهام للبحث عن "التحقق من صحة الكمبيوتر"، ثم حدده من قائمة النتائج.