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.
Stay protected with Windows Security - Microsoft Support
Select Start > Settings > Update & Security > Windows Security and then Virus & threat protection > Manage settings. (In early versions of Windows 10, select Virus & threat protection > Virus & threat protection settings .) Open Windows Security settings. Switch the Real-time protection setting to Off and choose Yes to verify.
Device protection in Windows Security - Microsoft Support
Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security. Notes: What you actually see on the Device security page may vary depending ...
下载并安装Microsoft Authenticator应用 - Microsoft 支持
设置Authenticator应用. 安装Authenticator应用后,请按照以下步骤添加帐户:. 打开Authenticator应用。. 选择右上角的 (+) 。. 将相机指向 QR 代码或按照帐户设置中提供的说明操作。. 帐户显示在Authenticator应用中后,可以使用一次性代码登录。. 有关Authenticator应用的详细 ...
Learn about performance features in Microsoft Edge
To improve memory and CPU utilization of the Microsoft Edge browser, we've developed a feature called sleeping tabs. Sleeping tabs puts background tabs to sleep after two hours of inactivity to free up resources for active tabs, new tabs, and other applications on your device. You can adjust the time interval by going to edge://settings/system.
Applies To: Microsoft Edge
Troubleshoot Windows Media Player Errors - Microsoft Support
Repair or reset Windows Media Player: If Windows Media Player is not working properly, you can try to repair or reset it to its default settings.To do this, Select Start > Settings > Apps > Installed Apps.. Scroll down and click the three horizontal dots next to Windows Media Player and choose Advanced options, and click the Repair or Reset button. Note that resetting Windows Media Player will ...
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
Meeting options in Microsoft Teams - Microsoft Support
In Teams, go to Calendar , select a meeting, and then Meeting options . Tip: Meeting options will open in a new window on your default browser. For the best experience, use Edge to open all meeting options. In a meeting invitation, select Meeting options.
Applies To: Microsoft Teams
Activer Windows - Support Microsoft
Activer Windows à l’aide d’une clé de produit. Une clé de produit est un code de 25 chiffres qui se présente sous la forme suivante : CLÉ DE PRODUIT : XXXXX-XXXXX-XXXXX-XXXXX-XXXXX. Pendant l’installation, vous êtes invité à entrer une clé de produit. Ou, après l’installation, pour entrer la clé de produit, sélectionnez le ...
Troubleshooting verification code issues - Microsoft Support
Troubleshoot unrequested verification codes. Note: If you're still not receiving verification codes, you may have to choose another method, or wait until you can access the phone or email you've listed. To protect your account and its contents, our support agents are not allowed to send verification codes or access and change account details ...
Applies To: Microsoft account dashboard
在电脑或 Mac 上下载并安装或重新安装 Microsoft 365 或 Office 2021 - Microsoft 支持
准备好安装了吗? 在开始之前,请确保电脑或 Mac 满足 系统要求。. 如果你已兑换产品密钥,只需重新安装应用,或者知道你已通过工作或学校分配了许可证,则可以跳到登录部分 ,下载并安装 Microsoft 365 或 Office。 但是,如果是 首次 安装 Microsoft 365 或 Office,可能需要先执行一些步骤。
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com