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.
Get help with your Microsoft account - Microsoft Support
Billing & payments. Your dashboard is also where you can: Buy, renew, or cancel a subscription.
Applies To: Microsoft account dashboard
Set up dual monitors on Windows - Microsoft Support
If you don't see the monitors, select Detect. In the Multiple displays section, select an option from the list to determine how your desktop will display across your screens. Once you've selected what you see on your displays, select Keep changes .
Insert a table of contents - Microsoft Support
Note: If you use a Manual Table of Contents style, Word won't use your headings to create a table of contents and won't be able to update it automatically. Instead, Word will use placeholder text to create the look of a table of contents so you can manually type each entry into the table of contents.
Applies To: Word for Microsoft 365, Word for Microsoft 365 for Mac, Word for the web, Word 2021, Word 2021 for Mac, Word 2019, Word 2019 for Mac, Word 2016
Run the latest version of Internet Explorer 11 - Microsoft Support
Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
Restore or reset Surface for Windows - Microsoft Support
If you can’t boot into Windows, you may be able to perform a system restore in the Windows Recovery Environment. Here’s how: Boot your Surface using a USB recovery drive. Insert a bootable USB drive into the USB port on your Surface, then press and hold the volume-down button while you press and release the power button. When the Surface ...
How to set up and test microphones in Windows - Microsoft Support
In Sound settings, go to Input and under Test your microphone, look for the blue bar that rises and falls as you speak into your microphone.If the bar is moving, your microphone is working properly.
How to adjust power and sleep settings in Windows
To adjust power and sleep settings in Windows 11, select Start > Settings > System > Power & battery > Screen and sleep. Screen: Select how long you want your device to wait before turning the screen off when you're not using your device.
在 Microsoft Edge 中打开 Adobe Flash - Microsoft 支持
了解如何在 Microsoft Edge 中启用 Adobe Flash。
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
但如果需要测试多个条件,例如我们假设所有条件都需要为 True 或 False (AND),或只有一个条件需要为 True 或 False (OR),或者如果想要检查某个条件是否不 (NOT) 符合你的条件,这时该怎么做呢?这三个函数均可以单独使用,但它们更常见于与 IF 函数成对使用。
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, Excel Web App, Excel for Windows Phone 10
What is: Multifactor Authentication - Microsoft Support
How does multifactor authentication work? Let's say you're going to sign into your Microsoft account or work or school account, and you enter your username and password.If that's all you need then anybody who knows your username and password can sign in as you from anywhere in the world!